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Author Topic: Switching from EFI to Carb  (Read 9282 times)

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flatlander2270

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Switching from EFI to Carb
« on: March 25, 2007, 09:36:14 PM »

Hey guys,
I have a 2001 SERG with Marelli fuel injection and having the usual problems. I've looked into Power Commander, but my local HD dealer (and also a place I work does like them much), SE Race Tuner but they are very expensive and additional to get tuned. I thought about putting a CV Carb on but wasn't sure if the tank would work or not. I've heard of people doing this but can't get in touch with someone in person to talk to.
Anybodies thoughts
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bisounours

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Re: Switching from EFI to Carb
« Reply #1 on: March 26, 2007, 03:36:52 AM »

Good morning flatlander2270,

I send you the   :welcome_005: from FRANCE.

It'll be nice for the other members if you present you in the thread "New Member Introduction"
with a pic of your bike  :2vrolijk_21:

Best regards
  :vrolijk_26: Jacques
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RJ749

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Re: Switching from EFI to Carb
« Reply #2 on: March 26, 2007, 10:08:49 AM »

Hey guys,
I have a 2001 SERG with Marelli fuel injection and having the usual problems. I've looked into Power Commander, but my local HD dealer (and also a place I work does like them much), SE Race Tuner but they are very expensive and additional to get tuned. I thought about putting a CV Carb on but wasn't sure if the tank would work or not. I've heard of people doing this but can't get in touch with someone in person to talk to.
Anybodies thoughts

Seems like you'd be going backwards for a few dollars saved.  If it were me I'd find a tuner that knows their stuff and get a PCC or SERT, then have it tuned properly.  It will be worth the hassle and $$$ in the end.

Welcome aboard as well, I'm sure you'll find help here on your problem.  I found on another post by Hubbard from awhile back that OTIS may have some technical info to get the Marelli injection on the early bikes to perform.  You can PM him here: http://www.cvoharley.com/smf/index.php?action=pm;sa=send;u=810
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Twolanerider

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Re: Switching from EFI to Carb
« Reply #3 on: March 26, 2007, 11:04:06 AM »

I ran a Power Commander on an M&M bike for a long time.  Worked fine.  It's all about finding the right tuner.

Where are you located?  Depending on geography some of us might have a recommendation that would help.
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Rhino

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Re: Switching from EFI to Carb
« Reply #4 on: March 26, 2007, 11:17:40 AM »

Hey guys,
I have a 2001 SERG with Marelli fuel injection and having the usual problems. I've looked into Power Commander, but my local HD dealer (and also a place I work does like them much), SE Race Tuner but they are very expensive and additional to get tuned. I thought about putting a CV Carb on but wasn't sure if the tank would work or not. I've heard of people doing this but can't get in touch with someone in person to talk to.
Anybodies thoughts

Personally, if it were me, I would use the ZIppers conversion. Good money spent.  www.zippersperformance.com

Rhino
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flatlander2270

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Re: Switching from EFI to Carb
« Reply #5 on: March 26, 2007, 07:40:56 PM »

Thanks guys for the replies,

Yeah, I know it seems stupid to go backwards, but I'm a carb guy and like how the bikes idle with a carb and I didn't have any trouble with my last bike that had a CV carb.
I respect the guys that I work with and they just don't like the power commander and I have read plenty of testimonials on this site to tell different. I did some research on the Zippers conversion and it sounds awesome but not for $1,800.

I live in Solomon, Kansas about 15 minutes from Salina.

Thanks for your help and suggestions are always welcome, and I haven't drawn a conclusion yet.
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Twolanerider

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Re: Switching from EFI to Carb
« Reply #6 on: March 26, 2007, 09:31:23 PM »

Thanks guys for the replies,

Yeah, I know it seems stupid to go backwards, but I'm a carb guy and like how the bikes idle with a carb and I didn't have any trouble with my last bike that had a CV carb.
I respect the guys that I work with and they just don't like the power commander and I have read plenty of testimonials on this site to tell different. I did some research on the Zippers conversion and it sounds awesome but not for $1,800.

I live in Solomon, Kansas about 15 minutes from Salina.

Thanks for your help and suggestions are always welcome, and I haven't drawn a conclusion yet.

Not intended as a recommendation either way.  Only you know what's best for your bike.  But if you're ever interested in seeing what the Power Commander might do for you there is perhaps the country's best Power Commander tuner about 275 miles from you in Joplin, MO.  A guy named John Golden who works as Rolling Thunder Dyno.  A true artist with that particular tool.
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Ironhorse

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Re: Switching from EFI to Carb
« Reply #7 on: March 27, 2007, 09:19:48 AM »

Personally, if it were me, I would use the ZIppers conversion. Good money spent.  www.zippersperformance.com

Rhino

Flatlander,

I've had the Zippers M&M conversion kit. In my experience I found it to be really just a Zippers version of M&M, not TRUE DELPHI. It came with a Zippers 50mm TB with air fillter, and fuel pressure regulator, and ECM. You have to cut up your fuel lines to make it work with the new fuel pressure regulator. None of their MAPS seemed to work right for me. Randy the sales guy blamed it on my FullSac exhaust, which he called "Homemade". Dan Fitmaurice, the company president and chief tech guy said it was the exhaust too. He couched his words a bit nicer, and said it was because they have never mapped a bike with FullSac before. The bike ran poorly so they sent me to a dyno tuner. He kept the bike for three days. When I got it back it ran much better than before, but the mpgs were in the low to mid 20s. On top of that the turn signals still did not work properly. Dan suggested I be patient and wait until the new M&M unit with auto-tune came out sometime in the next 4-6 months. However, since I use my bike everyday, I teach MSF and Ride Like a Pro, waiting 4-6 months was not an option. In my situation patience was really not a virture I could espouse. I live where I can ride and teach riding year around, so I need a good running fully functioning bike for my livelyhood. Perhaps if my bike is was a trailer queen, garage goddess, or weekend toy, waiting 4-6 months for Dan and Zippers would not have been an issue for me.

So I cut off all the brackets that mount the M&M ECM and coil, and had a metal worker fabricate new brackets and mounts. Then I bought a Delphi coil, and a Thayer harness to convert the bike to TRUE DELPHI. Then I bought the Zippers DELPHI kit with auto-tune and installed it. The bike runs like it should, like ALL T-Max auto-tune bikes do. Granted I would like to see mpgs in the high 30 low 40 range, but according to some, I should accept 30mpg because the bike finally runs better than ever. However the turn signals still do not work.

Flatlander, today might be your lucky day. According to Dan Fitzmaurice, Zippers now has the M&M T-Max with auto-tune available. Dan says it works just like the Delphi unit and I am sure it does, so that might be the way to go. However don't expect it to be a direct ECM swap out like everyone else. The bad news is that you still need to buy their TB and aircleaner. The way Randy explained it to me when I bought mine was that the ECM "looks" for the Zippers TB. If it does not see it, it won't work. The good news is that you get to keep you M&M mounting brackets, coil, and coil mounts. No cutting and fabricating for you!

I have not heard of anyone who has bought one of the M&M T-Max with auto-tune kits yet so we do not have a track record to refer you to. You may want to bite the bullet, and "take one for the team" and buy it and try it. If you do, keep us posted on what happens every step of the way. You may want to check on their return policy too. When I bought mine it was a 30 day no question return policy. However when I first tried to return mine, Randy said he could only take the ECM. He said he could freshen the ECM up and re sell it, but that the TB and airfilter were considered "used" and as such not returnable, so I would have to eat that. Later, when I continued to have problems with my turn signals, they finally offered to buy it all back no questions asked. However, by then I had too much into the bike, new harness, new coil, etc. Plus, with the new mounting brackets, there was no way I could remount my OEM ECM and coil back on the bike.

If you are serious about going CARB, over on the MSN Harley Tech Talk website, there is a thread that outlines every part abd fitting that you will need to buy to make the conversion. Lots of riders have used that thread, and the support of the members there help them to do it themselves.

I just noticed that you have a 2001. Mine is a 2001 as well, and according to Dan Fitmaurice, the 2001 is a "one off, one of kind". It's the only one that causes turn signal problems. He says their new M&M T-Max with auto-tune is now configured to resolve the turn signal problem, so if you buy it, it they may work just fine. Dan says they are continuing to work on a resolution to my turn signal problem, and I know they will do it eventually. It will probably take them a minimum of 1-2 years to do it, but that is to be expected.

I wish I could tell you more, but right now it looks like your only options are to go with the Zippers M&M T-Max with auto-tune which no one has tried yet, or go with the carb set up that everyone on the MSN Harley Tech Talk raves about.

Good luck and keep us posted.
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flatlander2270

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Re: Switching from EFI to Carb
« Reply #8 on: March 27, 2007, 10:02:43 PM »

Guys,
I appreciate the help with everything and understand everybodies concerns, thanks for the help. If I wouldn't have had a carb bike that worked so well then this wouldn't be an issue.
Right now, my bike is running extremely rich but seems to start fine but needs to warm up really well. I know that the tune isn't that far off it's just frustrating that I've got to spend $700 to get it tuned. I'm a hotrod guy and never had anybody else tune my cars, so why not just do it myself. Just need to know what parts are needed.

Thanks for the help guys

Eric
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RedDevil

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Re: Switching from EFI to Carb
« Reply #9 on: March 28, 2007, 09:00:29 AM »

Guys,
I appreciate the help with everything and understand everybodies concerns, thanks for the help. If I wouldn't have had a carb bike that worked so well then this wouldn't be an issue.
Right now, my bike is running extremely rich but seems to start fine but needs to warm up really well. I know that the tune isn't that far off it's just frustrating that I've got to spend $700 to get it tuned. I'm a hotrod guy and never had anybody else tune my cars, so why not just do it myself. Just need to know what parts are needed.

Thanks for the help guys

Eric
Eric,
Just a dumb question here.  But aren't you going to be spending more than $700 to convert your bike from EFI to Carb?  I understand your liking carbs for self-maint, but the EFI is a much better way to go and is infinitely more adjustable then a Carb would ever be.  JMHO.
Cheers :2vrolijk_21:,
 :devil:
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Re: Switching from EFI to Carb
« Reply #10 on: March 28, 2007, 09:25:07 AM »

Eric,
Just a dumb question here.  But aren't you going to be spending more than $700 to convert your bike from EFI to Carb?  I understand your liking carbs for self-maint, but the EFI is a much better way to go and is infinitely more adjustable then a Carb would ever be.  JMHO.
Cheers :2vrolijk_21:,
 :devil:

More than $700. Carb/AC assembly, manifold, cables, ignition, coil, rewiring, You have to get the whole FI/ECM thing disconnected completetly (mechanically and electrically) and install the new stuff as if the FI never existed. I don't disagrre with flatlander being more comfortable with a carb bike, but the conversion isn't cost effective. Like you said Red, it's cheaper to fix up the FI properly. Hoist! 8) 
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flatlander2270

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Re: Switching from EFI to Carb
« Reply #11 on: March 28, 2007, 02:11:11 PM »

Wow,
I knew it wasn't going to be cheap and wasn't sure what had to done with ignition, thanks.

Damn, it's making the FI tuner thing looking better
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Re: Switching from EFI to Carb
« Reply #12 on: March 28, 2007, 02:20:15 PM »

Wow,
I knew it wasn't going to be cheap and wasn't sure what had to done with ignition, thanks.

Damn, it's making the FI tuner thing looking better

Yeah Eric, not too cheap, but certainly doable. If you're ever going to sell this bike, it will be less desirable and devalue a CVO bike. But I'd look at an S&S Super carb/manifold/AC (comes as a package) and associated cables, Accel coil, Dyna S ignition. I'm not sure what's under the "point's cover or how the Dyna S will mount there, but you'll need to be able to time the bike manually from the ignition plate there. Rewire everything as if you were building a new custom bike and abandon the old wiring in place. You'll probably have to replace the gas tank too, since you have no petcock. I'd probably think twice about doing all this howecer. Good luck Eric. Hoist! 8)
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Re: Switching from EFI to Carb
« Reply #13 on: March 28, 2007, 03:10:46 PM »

Hey, Flatlader...

Those guys up at Topeka Harley Davidson did a great job with the power comander on my FLHRSEI2.

Dave
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flatlander2270

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Re: Switching from EFI to Carb
« Reply #14 on: March 29, 2007, 08:56:45 PM »

Thanks for everything guys
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