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CVO Technical => Intake/Exhaust/ECM => Topic started by: guppytrash on April 27, 2011, 08:26:05 AM
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Now that the weather has allowed most of us to put a few miles on this year I was hoping to get some current feedback on the Rev Perf EMS.
Not much being said about this lately.
I am guessing you all are just enjoying the "ride without screwing with it" benefit.
Any quirks, anything that stands out good or bad?
Thanks gt
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Ive still got a low speed stumble or cough on occasion. After decel it will do this sometimes but not always. Ive done the free air calibration and brian said to ride the brake in 4th gear from low rpm to wot. Not surewhat to do next ive returned the ecm once already. The bike does run good but the the stumble is annoying. I dont think im the first with this issue but im at a loss to resolve it. Maybe brian can help or i was going to call the hd dude (jim). I still have my old power commander. Just my luck to try the latest greatest and have problems :bananarock:
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I'm under the understanding Rev Perf makes permanent changes to the ECM that cannot be undone. If you are not happy with the Rev Perf EMS over time, can you go back to a regular dyno tune using TTS, or do you need to by another ECM?
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I'm under the understanding Rev Perf makes permanent changes to the ECM that cannot be undone. If you are not happy with the Rev Perf EMS over time, can you go back to a regular dyno tune using TTS, or do you need to by another ECM?
My understanding is this is not true... The ECM can be flashed back to stock if desired.
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The only problem I have is a backfire when starting once in a while. I'm trying to see if there is some sort of pattern as to when this happens. So far it has just been the first start of the day, and it doesn't happen that often.
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Just got back from a ~1500 mile trip from Austin to the Big Bend area with the EMS. Temperatures ranged from 60's to close to 100F, humidity ranged from 70% to 7%, gas was anything we could find from 89-93 octane, no clue on the % ethanol. Bike ran great, started up on pretty much the first revolution both hot and cold. Mileage was between 37 to 42 mpg depending on speed and wind. I guess I'm pretty much a happy camper, although it sucks being back at work after the trip. Anyone need a PCIII?
(http://i713.photobucket.com/albums/ww137/mbmendelow/Big%20Bend%202011/IMG_1028.jpg)
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I had an exhaust gasket leaking that resulted in stumbling, then after fixing the leak it was still there. The EMS needed to relearn those cells and they're tricky to hit. Brian told me to use rear brake to keep the RPM in the problem area and very slowly let it accelerate while rolling the throttle. I think I did the routine in 3rd or 4th gear, and did it a few times to be sure. It'll buck and snort, but the problem area went away. The EMS is very sensitive to exhaust leaks, even leaks you might not hear easily. I've switched from 2-1 to TD's and back a couple times and the EMS just happily does it's job, I'm very happy with it.
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Just got the 05 Teal back from Jim he installed the Rev Perf and the Supertrapp Megaphone 2 into 1 I've got around 500 miles on it now runs great starts like it should NO back fire. I'm very happy so far! I'm bring it to Solvang in acouple of weeks will put on a bunch of miles with that trip!
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I'm under the understanding Rev Perf makes permanent changes to the ECM that cannot be undone. If you are not happy with the Rev Perf EMS over time, can you go back to a regular dyno tune using TTS, or do you need to by another ECM?
As cited on the vendor's FAQ page this is inaccurate. Question #7 there says return to original isn't an issue:
http://www.revperf.com/Precision/precisionFAQ.html#7
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How is the engine effected if the ECM is returned to stock, with the Wide band O2 sensors and missing cat?
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How is the engine effected if the ECM is returned to stock, with the Wide band O2 sensors and missing cat?
If you returned the ECM to stock, you'd want to completely remove the EMS unit and re-install the narrow band 02 sensors... :2vrolijk_21:
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How is the engine effected if the ECM is returned to stock, with the Wide band O2 sensors and missing cat?
That's not so much an EMS specific question as it is a tuning specific question. First off returning the ECM to "stock" implies removing the entire EMS kit. So the supplied sensors would be removed and the originals reinstalled. The impact of any exhaust or other changes would be based on whether the bike had otherwise been tuned to match those changes.
Whether via the EMS package or some other tuning package the bike's engine management system has to be tuned to match any changes that have been made. If, for example, someone removed a Power Commander and changed to a TTS tuner the TTS package would have to be set up to match the bike. If someone removed the EMS package whatever they then changed to would also have to be set up to match the bike. Even if that were a re-tune of the stock ECM.
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I've got about 5-600 miles since installation. No Problems except the lack of ride time. RevPerf starts great, no stumbles and has a great power band. Someday I will get it onto a dyno just to see what the results are with this thing, but no current plans. Just ride.....
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I've got about 5-600 miles since installation. No Problems except the lack of ride time. RevPerf starts great, no stumbles and has a great power band. Someday I will get it onto a dyno just to see what the results are with this thing, but no current plans. Just ride.....
What would be interesting to see, would be a properly tuned TTS system bike on a dyno chart, then a Rev Perf. EMS installed on the same bike with its dyno run, and seeing a comparison of the two on the same chart, HP, TQ & air fuel. If the lines are very close to each other, I'd be sold on the EMS because of the flexibility of modifying without needing a new tune every change. However, it sounds like some riders are reporting some stumbling at times on the EMS, and your hands are tied to a certain extent to fix that, where a tune with TTS can usually work out all the bugs with enough time.
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What would be interesting to see, would be a properly tuned TTS system bike on a dyno chart, then a Rev Perf. EMS installed on the same bike with its dyno run, and seeing a comparison of the two on the same chart, HP, TQ & air fuel. If the lines are very close to each other, I'd be sold on the EMS because of the flexibility of modifying without needing a new tune every change. However, it sounds like some riders are reporting some stumbling at times on the EMS, and your hands are tied to a certain extent to fix that, where a tune with TTS can usually work out all the bugs with enough time.
The few instances I am aware of where stumbles existed with the EMS system were all traced to intake/exhaust leaks. Once the leaks were corrected and after some riding time to allow the 02 sensors to adjust, the stumbles disappeared. If you're (or anyone) is experiencing stumbling, I'd look for a cause such as a leak... :2vrolijk_21:
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What would be interesting to see, would be a properly tuned TTS system bike on a dyno chart, then a Rev Perf. EMS installed on the same bike with its dyno run, and seeing a comparison of the two on the same chart, HP, TQ & air fuel. If the lines are very close to each other, I'd be sold on the EMS because of the flexibility of modifying without needing a new tune every change. However, it sounds like some riders are reporting some stumbling at times on the EMS, and your hands are tied to a certain extent to fix that, where a tune with TTS can usually work out all the bugs with enough time.
For what it may be worth I was able to do dyno comparisons on the same dyno. Admittedly the runs were quite some time distant from each other. So differences in use of the dyno wheel and a variety of other factors could all be asserted. But it was at least the same bike on the same dyno with no other bike-specific differences than the installation of the EMS package.
Numbers were comparable. Though I had what was always felt to be a "good tune" before I didn't lose anything with the EMS installation. Comparing the AFR lines may not be the best comparison as most tuners tune to a flat AFR. If that line stays flat we call it good and move on. This package's load response intends to move that line relative load and requirements of the riding condition at the moment. Strictly for comparison's sake these are the before and after numbers I had about two tanks full after my installation.
(http://www.cvoharley.com/smf/gallery/527_15_01_11_12_07_30.jpg)
There have been some glitches with the EMS unit. No one with any sense has said anything other than that it's still a very new product. As a cohort we're small. Not much of a sample size; especially when considering that most of the attention (at least here) has happened prior to the beginning of the riding season.
The company has seemed to respond to the glitches directly and quickly. One can only assume they'll get better too as their experience base grows. It's not an uncomplicated software they're working with after all. So whether it's a little time dialing in a TTS install, which needs to be done every time, or what has been only the occasional glitch with the EMS package needing some time it seems this package still has promise.
I, and others I've spoken to, all look forward to this spring, summer and fall as a larger test bed for our group. To see how the units perform and hold up under larger service. It's nice to be optimistic; and I am. But the proof of the pudding is in the eating. Or in our case in the riding.
So long as the company continues to be as easy to work with as they have been to date, as forthright as they've proven to be when questions arise and the product shows the promise/effectiveness it has so far it is easy to be optimistic. So bring on the summer, and the pudding.
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That's good comparison info. Thanks for the post and the explanation. I might be joining the "small sample size" with my 120R engine once Rev Perf. gets their product to work with the 2011 ECMs.
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Actually, I was referring to the effect on the engine IF the ECM had to temporarily be reflashed to stock to get you going before sending it back to Rev Performance for a redo flash.
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Actually, I was referring to the effect on the engine IF the ECM had to temporarily be reflashed to stock to get you going before sending it back to Rev Performance for a redo flash.
Admittedly I'm not sure I understand the scenario you might be envisioning. If an o2 sensor or their little add-on module fails it's been explained to me that the system simply reverts to the map currently in the ECM, with whatever "learning" it's done to date, and simply no longer monitors o2 sensors nor makes load based adjustments as you ride. You're simply riding on the base map.
In that case there'd be no need to "reflash to stock" nor send the ECM back to the company. You'd just ride on, replace the defective sensor or external module when it's convenient, and be done with the problem.
If, on the other hand, you actually had an ECM failure of some sort you're dead in the water anyway. RevPerf has said they intended to keep a few ECM spares on hand for failure replacements. If they manage that you're a one day ship away from replacement stock. A dealer is likely going to have to order in a replacement ECM so there's no real practical difference I see so long as RevPerf stays on the ball with availability and service (a question, by the way, that's always as easily directed at Mother Harley).
If you're considering some scenario I'm not please share it. We can't prepare for what we've not considered.
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you answered it. Thanks. Failed ECM was what I was questioning.
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Maybe this should be directed to Rev Perf. tech support, but how do you know if an o2 sensor failed? I've never had a failed o2 sensor, but doesn't the motorcycle on stock bikes just shut down?
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I have also experienced some stumbling after decel in the off idle mode.I have the rev perf ems and have about 200 mi on this system.The bike runs great otherwise.Had the TTS system but could not get rid of the off idle stumble so I switched to EMS. Also had a problem with engine light on sometimes,no cruise and limited power,(TTS).The bike runs noticably smoother and a little stronger with the EMS,have not experienced the engine light on yet.Sounds to me that I have an additional problem.Will have to check headpipes for leak.Any one have similar probs.
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I have also experienced some stumbling after decel in the off idle mode.I have the rev perf ems and have about 200 mi on this system.The bike runs great otherwise.Had the TTS system but could not get rid of the off idle stumble so I switched to EMS. Also had a problem with engine light on sometimes,no cruise and limited power,(TTS).The bike runs noticably smoother and a little stronger with the EMS,have not experienced the engine light on yet.Sounds to me that I have an additional problem.Will have to check headpipes for leak.Any one have similar probs.
Check for both intake and exhaust leaks... :2vrolijk_21:
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Thanks for the reply I will do that right away.On the intake I changed the a/c maybe I moved the throttlebody enough to make a leak, and I changed the head pipes a while ago but I put new gaskets in and tightened them real well,maybe the heat and vibration loosened them up.
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The few instances I am aware of where stumbles existed with the EMS system were all traced to intake/exhaust leaks. Once the leaks were corrected and after some riding time to allow the 02 sensors to adjust, the stumbles disappeared. If you're (or anyone) is experiencing stumbling, I'd look for a cause such as a leak... :2vrolijk_21:
Just ordered 2 sets of intake seals.......1 for just incase :nervous:
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Don. Besides the increase in HP @ TQ I thought I read in one of your posts that you also got an increase in your MPG. Is that a correct statement?
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Don. Besides the increase in HP @ TQ I thought I read in one of your posts that you also got an increase in your MPG. Is that a correct statement?
Yes, that'd be correct. I don't pay a lot of attention to fuel mileage on the bikes. Only the quickie calculations necessary to know something isn't working right. But in the first three or four tanks full after the install was done I was curious enough to monitor fuel usage closely.
Prior to the install the bike got around 35 mpg knocking down highway miles. It's a 107" build that produces fair numbers for its displacement so I never knocked that mileage. Pulling the trailer or if I was playing with it a bit it'd do 32-ish mpg. In those tanks of fuel I monitored closely after the EMS install it had gone to (if I remember correctly) 42+. Gaining almost 20% in fuel economy while keeping performance numbers the same speaks to some real efficiencies gained.
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Thanks. For the info. That is a nice improvement.
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Maybe this should be directed to Rev Perf. tech support, but how do you know if an o2 sensor failed? I've never had a failed o2 sensor, but doesn't the motorcycle on stock bikes just shut down?
Couple years ago while I was wrestling with the 110 problems on my 07 I picked it up from the dealer after the 'enhancement' had been done. On the way home I noticed that the check engine light was on. After I got it home I discovered that both O2 sensors had been left unconnected. I connected them and cleared the codes. Bike ran ok even though neither of the 02 sensors were functioning.
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Hi,first post,i'm reading all I can on the EMS across the 3 forums i read,on another forum there's a thread about the EMS having more work needed,for 2010 bikes,not sure if it's relavant to this thread but thought i'd mention it.
Graham. :)
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Hi,first post,i'm reading all I can on the EMS across the 3 forums i read,on another forum there's a thread about the EMS having more work needed,for 2010 bikes,not sure if it's relavant to this thread but thought i'd mention it.
Graham. :)
Hadn't read nor heard of current delays for product development on the pre-2011 bikes. The 2011 package they are still working on though. Current is that it's a couple weeks from being ready for the street.
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So, Twolanerider are you saying that the ECM isn't ready for the 2011's? I ordered one with a 2011 part number and recieved it some time ago. Nothing was said at the time that it wasn't ready for install. I haven't installed it yet, the bike is at the paint shop. What exactly is wrong? I have a Fullsac header (09 version to match 18mm 02 Sensors) to install along with it. Alaska trip starts June 11th, need to have everything ready before then.
Thanks
Dwight
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When I ordered for my '11 they told me they could make it work with some sort of work-around, but it was not perfected yet. I'm sure they will get it to work for you, it's more on a individual basis rather than the "production" version. Brian gave me a choice of sending my '11 ECM or buying the replacement version and leaving my factory one stock.
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So, Twolanerider are you saying that the ECM isn't ready for the 2011's? I ordered one with a 2011 part number and recieved it some time ago. Nothing was said at the time that it wasn't ready for install. I haven't installed it yet, the bike is at the paint shop. What exactly is wrong? I have a Fullsac header (09 version to match 18mm 02 Sensors) to install along with it. Alaska trip starts June 11th, need to have everything ready before then.
Thanks
Dwight
Dwight, what I've been told by Revolution Performance when dealing with a buddy's 2011 that we're waiting for the kit on is RevPerf doesn't have the new software that is in the 2011 ECMs fully mastered yet. Though they are close. What they can do for the 2011 bikes, however, is use a previous model's ECM. ECM from a 2008 is apparently an ideal donor. Though even that we're told needs to be an -08 or a -08A revision. -08B apparently starts getting the newer software that brings the same issue back in play.
If you've got the kit in hand but have not yet sent them your ECM you've not yet run in to the issue. The parts in the kit are correct and ok. It's the software load that must be done to your ECM and that is done at their shop (when you send them your ECM) that is the delay. Since they are now reporting only a short time to completion of the 2011 software, and since you're waiting on paint anyway, you'll likely not face the problem when you finally send your ECM to the shop.
This is synthesized from bits and pieces of collected information and conversations. Best source is, of course, the shop itself. So to make sure this is all accurate or to see if more current data is available it's always worthwhile to just give them a call.
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Dwight, what I've been told by Revolution Performance when dealing with a buddy's 2011 that we're waiting for the kit on is RevPerf doesn't have the new software that is in the 2011 ECMs fully mastered yet. Though they are close. What they can do for the 2011 bikes, however, is use a previous model's ECM. ECM from a 2008 is apparently an ideal donor. Though even that we're told needs to be an -08 or a -08A revision. -08B apparently starts getting the newer software that brings the same issue back in play.
If you've got the kit in hand but have not yet sent them your ECM you've not yet run in to the issue. The parts in the kit are correct and ok. It's the software load that must be done to your ECM and that is done at their shop (when you send them your ECM) that is the delay. Since they are now reporting only a short time to completion of the 2011 software, and since you're waiting on paint anyway, you'll likely not face the problem when you finally send your ECM to the shop.
This is synthesized from bits and pieces of collected information and conversations. Best source is, of course, the shop itself. So to make sure this is all accurate or to see if more current data is available it's always worthwhile to just give them a call.
This is basically what I have been told directly from them, EXCEPT........... nothing is ready for the Softails yet as it is different from the others all together. I was told they are still a couple of months out for the Softails.
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This is basically what I have been told directly from them, EXCEPT........... nothing is ready for the Softails yet as it is different from the others all together. I was told they are still a couple of months out for the Softails.
My apologies. Wasn't thinking Softails at all. That was all specific to touring models as that's all I'd had reason to deal with.
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I have over 1000 trouble free miles on my 07 Street Glide since I installed the Rev Perf EMS in mid March. The bike starts better, idles better and performs better no matter how I twist the throttle! I am happier with it more now than when I first installed it and it cured the aggravating dead spot I had 2500 rpm. No more down shifting and over reving...It tamed my Bucking Bronco. Best money I ever spent. (Mods: S&S 106, SE 259E cams, CVO Heads decked .032", Cometic .030" HG and Rinehart 2 into 1)
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Hadn't read nor heard of current delays for product development on the pre-2011 bikes. The 2011 package they are still working on though. Current is that it's a couple weeks from being ready for the street.
On another forum(don't know if I can name forums,so I won't)there's a thread with someone having a problem with an 2010 ecm(with a built engine)& it's been indicated that RevPerf have said they're still working on 2010 ecm's.
By the way my only reason for contributing to this thread is i'm almost ready to buy the EMS,after months of dithering between all the popular tuners,& the thread i'm referring to is the only comment i've seen about a potential problem,but my bikes an 07' so I think i'm clear.
Graham. :)
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I have it on my '04. I recently rebuilt the engine down from a 124 to a 117. I am still breaking it in but the RevPerf EMS is doing its job flawlessly...
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On another forum(don't know if I can name forums,so I won't)there's a thread with someone having a problem with an 2010 ecm(with a built engine)& it's been indicated that RevPerf have said they're still working on 2010 ecm's.
By the way my only reason for contributing to this thread is i'm almost ready to buy the EMS,after months of dithering between all the popular tuners,& the thread i'm referring to is the only comment i've seen about a potential problem,but my bikes an 07' so I think i'm clear.
Graham
How about posting a like to the thread above.
BTW. Rev Perf tech says if you are contemplating a final drive gearing change, they can do the speedo corrections without loosing cruise or messing up the 6th gear light. They just need the specs of your change and the tire size.
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On another forum(don't know if I can name forums,so I won't)there's a thread with someone having a problem with an 2010 ecm(with a built engine)& it's been indicated that RevPerf have said they're still working on 2010 ecm's.
By the way my only reason for contributing to this thread is i'm almost ready to buy the EMS,after months of dithering between all the popular tuners,& the thread i'm referring to is the only comment i've seen about a potential problem,but my bikes an 07' so I think i'm clear.
Graham. :)
I believe in the thread you may be referring to, the guy doesn't know what his problem is, and is assuming it may be the EMS. Others have suggested to him that he properly troubleshoot and diagnose his issue before making that assumption.
I know of many who have used the EMS on 2010 bikes without issue... :nixweiss:
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I believe in the thread you may be referring to, the guy doesn't know what his problem is, and is assuming it may be the EMS. Others have suggested to him that he properly troubleshoot and diagnose his issue before making that assumption.
I know of many who have used the EMS on 2010 bikes without issue... :nixweiss:
Guys,this is the post,please don't think i'm dissing Rev Perf or the EMS,as I said i'm probably going to buy one for my bike.
I installed the percision EMS on my 2010RG with my new big money motor and I'm having problems with it. The bike is running way to rich so rich that the oil smells like gas. the other problem is when I pull in the clutch and apply the brake the bike shuts down(not all the time but enuff). I put about 70 miles on the bike trying to break it in before my mech. friend told me its running way to rich, then we smelled the oil and it smelled like gas. Now my question is could I have damaged the motor by riding it this rich? will my piston rings seat properly? My buddy told me that the gas will wash away the oil and the cylinders can glaze over. can this happen with the fist 70 miles of break in. I called Rev. Perf. and told them what was going on and they told me that this is a problem that they are having with the 2010 models and they are trying to find a solution to the problem. I just wish they had told me they were having problems with the 2010 models before they sold me the ems. I'm sure Rev. Perf. will make it rite. I've been happy with there work in the past (flywheels trued, plugged, balanced and welded with timken). I've also been happy with there customer service as well.... So my QUESTION is, do you think I could have damaged my new motor by breaking it in with it running rich like this? have I damaged the cylinder walls? and why does the motor oil smell like gas? If anybody has any advise for me please help.
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I called Rev. Perf. and told them what was going on and they told me that this is a problem that they are having with the 2010 models and they are trying to find a solution to the problem.
Were you given an explanation as to why your issue is specific to just the 2010 models?
Also, and my apologies for covering ground you no doubt already have several times, are you 100% sure you've supplied the correct fuel injector information? If you did a big build injectors might have been changed. One of the things we've been told repeatedly is that injector information must be absolutely accurate for the EMS system to perform. One other thought just came to mind. If it was an extreme build was anything done with the stock fuel pressure regulator? That's something that the EMS data sheet doesn't even ask about.
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Were you given an explanation as to why your issue is specific to just the 2010 models?
Also, and my apologies for covering ground you no doubt already have several times, are you 100% sure you've supplied the correct fuel injector information? If you did a big build injectors might have been changed. One of the things we've been told repeatedly is that injector information must be absolutely accurate for the EMS system to perform. One other thought just came to mind. If it was an extreme build was anything done with the stock fuel pressure regulator? That's something that the EMS data sheet doesn't even ask about.
Don,
This isn't his issue - he knows nothing first hand - he's only copied someone elses post from another forum. As I mentioned, I know of several Rev. Perf. EMS installations on 2010 bikes without any issues. And I know of 2011 bikes running well with 2010 ECM's with the Rev. Perf. EMS. So I suspect there is more to the issue then it mentioned in the copied post. Some unmentioned variable or something... If the issue was strictly a straightforward problem with the EMS on 2010 bikes - known by Rev. Perf. - then there would not be so many 2010 bikes running the EMS without issues. It certainly could be something related to the EMS with some particular installed component or particular pipes on 2010's, but not likely an across the board issue with 2010's. For sure there's not enough information available to make any type judgement or statement...
Perhaps if Brian sees this thread, he can clarify the subject firsthand...
Scott
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Don,
This isn't his issue - he knows nothing first hand - he's only copied someone elses post from another forum.
Humbug......
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I think that's the fellow who had some sort of OTHER tuner on-board also...and Rev Perf couldn't unlock or upload to the ems?? I was watching that also, just for info. As you guys have seen many, many times...a situation is posted looking for opinions; it gets resolved with the dealer; and we get no follow up information. I am subscribed to the topic and have heard nothing for a couple of weeks.
I have the Rev Perf on my 2010 CVO Ultra and enjoy the improvement in all areas. Of course, I started with a plain-jane EMS and no upgrades done; went to Rev Perf with just pipes and a NO-Cat.
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I think that's the fellow who had some sort of OTHER tuner on-board also...and Rev Perf couldn't unlock or upload to the ems?? I was watching that also, just for info. As you guys have seen many, many times...a situation is posted looking for opinions; it gets resolved with the dealer; and we get no follow up information. I am subscribed to the topic and have heard nothing for a couple of weeks.
I have the Rev Perf on my 2010 CVO Ultra and enjoy the improvement in all areas. Of course, I started with a plain-jane EMS and no upgrades done; went to Rev Perf with just pipes and a NO-Cat.
This is the info I was looking for. Late model CVO with basic performance upgrades and the EMS. If you have the rear ETMS enabled have you had it shut down the rear cylinder since the EMS? I realized even in CA you have not got to the real hot riding weather yet.
Any immediate noticeable differences? Such as throttle response, any pinging/detonation, or anything else that may have jumped out at you?
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I have it on my '04. I recently rebuilt the engine down from a 124 to a 117. I am still breaking it in but the RevPerf EMS is doing its job flawlessly...
I'm curious why you downsized? It's just unusual is all. 99% of riders doing engine mods are for more HP & TQ.
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I'm curious why you downsized? It's just unusual is all. 99% of riders doing engine mods are for more HP & TQ.
Couldn't keep head gaskets in tact with the 4 1/4 bore. Just not enough meat to keep them sealed. Dropped to a 4 1/8 bore.
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Couldn't keep head gaskets in tact with the 4 1/4 bore. Just not enough meat to keep them sealed. Dropped to a 4 1/8 bore.
What was your compression with the 4.25" bore?
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Corrected was 9.7
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@ guppytrash
Haven't had the rear cylinder shut down...yet...its only gotten up to about 80 out here. I am taking a 5-600 mile quick trip this week and am anxious to see mileage and such. When I first installed and started, I did have a rough running engine that cleared up quickly. The seat of the pants feel is good power throughout the entire running area.
I am not a super aggressive throttle guy, but it sure makes it fun to have the bike pull REAL strong from the low 2000's all the way to redline!! Its just something you have to try after the new toys are installed.....
I thought the stock performance was good, and I believe this is MUCh better. From a stop, no stutter; while cruising and want to increase...plenty of torque. Ii actually think the bike is completed with these simple additions.
I put in the 1.75" cores from Fullsac, the Jackpot 2-1-2 and the Rev Performance EMS....that's all...and it's plenty. I am now the guinea pig for the long term with no additional mods and will keep you guys informed.
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Ok now I get it!
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On another forum(don't know if I can name forums,so I won't)there's a thread with someone having a problem with an 2010 ecm(with a built engine)& it's been indicated that RevPerf have said they're still working on 2010 ecm's.
By the way my only reason for contributing to this thread is i'm almost ready to buy the EMS,after months of dithering between all the popular tuners,& the thread i'm referring to is the only comment i've seen about a potential problem,but my bikes an 07' so I think i'm clear.
Graham. :)
You are refering to my bike. It turnes out that my 02 bungs were too long and the 02 sensers could not get a good reading of the exhaust gases. It had nothing to do with the precision EMC at all. As soon as Brian Nallin the owner found out I was having problems he overnighted my headers (free of charge) to his shop and is installing new 02 bungs free of charge also. He told me I will have my headers back in 3 days. He said he will do whatever it takes to get my bike running rite if that means he has to fly his tech to Cleveland to do it. Revolution Performance is a class act operation. I will be a life long customer because I know if I ever have any problems this company will make it rite.
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You are refering to my bike. It turnes out that my 02 bungs were too long and the 02 sensers could not get a good reading of the exhaust gases. It had nothing to do with the precision EMC at all. As soon as Brian Nallin the owner found out I was having problems he overnighted my headers (free of charge) to his shop and is installing new 02 bungs free of charge also. He told me I will have my headers back in 3 days. He said he will do whatever it takes to get my bike running rite if that means he has to fly his tech to Cleveland to do it. Revolution Performance is a class act operation. I will be a life long customer because I know if I ever have any problems this company will make it rite.
That is the straw that breaks the camels back.
It will be Rev Perfmomance for me :2vrolijk_21:
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Took a 550 mile ride in the past couple of days riding 2-up the entire time. This Rev Perf is great !!
Had good power at all speeds, mileage averaged just shourt of 40 mpg and it never stumbled. I am very, very happy with the EMS. And I am still impressed with the new HD Frame and driveability; had to pass a semi going up a hill, by the time I looked down at the speedo I was just over 90 mph !!! But the bike was solid and tight.