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Author Topic: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?  (Read 12004 times)

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MadCVORG

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #15 on: March 24, 2015, 05:53:11 PM »

Yah, the 259E's should develop more power at lower RPMs, so as others have said, I'd suspect the tune was done improperly. I have a similar setup--different cams (close profile to the 259E)--with the 10.5 pistons, etc., and I get 116HP/122TQ, and average 38mpg. Time to find a competent tuner.
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CVO2FIXUP

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #16 on: March 24, 2015, 06:31:40 PM »

  After my build, the bike is fast as snot but I totally lost my millage. If I goose it up, or ride hard with the boys, I can get through a tank of gas in a blink.  Killer gas monster.
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daveinhouston

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #17 on: March 24, 2015, 07:34:55 PM »

I had a long talk with Steve at GMR. Going to go with his 113 kit. Wasted my money at the Harley shop but live and learn!
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CircleRacer

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #18 on: March 24, 2015, 07:38:38 PM »

Sorry to hear you have to start over that is a hard lesson But when you get your bike back this time you won't be able to stop smiling!!!
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Hogster

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #19 on: March 24, 2015, 08:32:18 PM »

I had a long talk with Steve at GMR. Going to go with his 113 kit. Wasted my money at the Harley shop but live and learn!

Dave, you will love Steve's work. Best $ I've spent. I can't stop grinning!
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daveinhouston

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #20 on: March 24, 2015, 08:37:22 PM »

I'm looking forward to having it built right. Went to the Harley shop thinking about maintaining the warranty when I should've been going to the right builder.
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Rooster

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #21 on: March 24, 2015, 09:18:21 PM »

Your bike will be in good hands now. Can't wait to hear you crow about it. :2vrolijk_21:
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kojak

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #22 on: March 24, 2015, 10:31:45 PM »

You said you're not a hot rodder. Do you ride 2 up most of the time, is that why you need more performance? The horsepower number is pretty irrelevant unless you ride your cvo like its a crotch rocket, on the other hand torque is what you really need, specially with the cam you have. 115 ft-lb of tq is pretty decent for most. With a better tune, you might be able to do a bit better.
"Would like to be up in the 115 - 120 range with decent mpg" I assume you are talking about horsepower at peak rpm, decent mileage will probably be in the mid to high thirties. You had your stock cvo engine upgraded to higher compression pistons, a cam that pulls harder on the low end (more torque and less hp) and had it dyno'd. Don't know if you had your heads reworked or changed your throttle body. Kinda going not much different from your stock configuration for performance changes. Before you dive into more major modifications, think about what is your riding style and what you really want. Dyno charts are nice to look at, good for bragging on forums and useless unless you understand what you want and get the right setup. Hope this helps and you don't keep spending $ that don't get you what you really wanted.
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kojak
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daveinhouston

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #23 on: March 25, 2015, 07:37:27 AM »

All very good points Kojak. Wise actually. Unfortunately for me I haven't always made wise choices when it comes to motorcycles.......or women! I normally ride alone. We go to Sturgis most years and my wife rides with me then. I actually wasn't terribly dissatisfied with the "seat of the pants" feel of the bike after the build, even though the chart looked so bad. It was the horrendous mpg that prompted me to do something about it. I suspect a cam change, exhaust change and retune would have got the bike in a much better place.
I'm not a hot rodder but I do like having plenty of roll-on power. And I have to admit there are bragging rights with the guys I ride with around who has the most hp. Stupid I know but true. Especially for someone whose 62 years old and been riding for fifty years. But after all those years a hard pulling Harley under me still puts a smile on my face!
What convinced me with Steve were his discussions around boring the cylinders to 113ci; not so much for volume as to true up the cylinders. I used to build engines many years ago and we did the same thing. Another issue was finding a good dyno tuner. You'd think in a town the size of Houston there'd be several. There may be but I couldn't find one. The guy who did mine was touted to be the best in town.
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skratch

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #24 on: March 25, 2015, 08:21:01 AM »

The guy who did mine was touted to be the best in town.

aren't they all?
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Dr.D

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #25 on: March 25, 2015, 09:15:14 AM »

Dave I know for certain that build of yours could be made much better with a proper tune but that GMR build will be better-er. Buying and modifying Harleys has nothing to do with wisdom or fiscal sense it is pure unadulterated passion. Same as women. ;D It's your money so do as you wish just make sure you enjoy it. Remember money only does you good when you get rid of it.
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ultrarider123

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #26 on: March 25, 2015, 09:24:25 AM »

I had a long talk with Steve at GMR. Going to go with his 113 kit. Wasted my money at the Harley shop but live and learn!

When I get ready for some motor work, my first call will be to Steve.  Not only am I impressed with his discussion here on the site, I've seen his work and talked with the folks that swear by him.  There are some good tuners/builders out there but Steve and GMR would be at the top of my short list of folks that I'd trust.  The others on that list?  All contributers and vendors here on the site....shows what good word of mouth advertising will getcha....
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GMR-PERFORMANCE

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #27 on: March 25, 2015, 09:44:26 AM »

Well the power that he got from all that money was nothing more than what most get with a cam swap alone. Results do vary with pipe and what a stock head will flow. But the kit he has and how it was built in my opinion is incorrect. The idea that its ok to ball hone a cylinder for a performance build with a less than stellar piston to wall clearance to start with . Is not going to end well. The 259 cam is a ok cam if you have enough CI and compression to support it. Its all about the sum of parts working together in harmony that will deliver the final product. And I am looking forward to building the next 113 kit for Dave.



« Last Edit: March 25, 2015, 09:47:03 AM by GMR-PERFORMANCE »
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kojak

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #28 on: March 25, 2015, 06:35:38 PM »

"It was the horrendous mpg that prompted me to do something about it. I suspect a cam change, exhaust change and retune would have got the bike in a much better place. "
Good luck with your project Dave! I also have 41 years and about 625k miles in the saddle so far:) Spent about 15 years of those in the 80's/90's riding crotch rockets exclusively including an insane Kaw 750GPZ Turbo. Before I switched to Harley's exclusively about fifteen years ago, my favorite bikes were the Yamaha FJ/FJR series sports tourers. Had to switch because I was always pulling over to the side of the road waiting for my buddies on the hogs to catch up to me and I wasn't trying to outrun them, funny...Now I am one of the old geezers on a road glide, go figure!
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kojak
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FLSTFI Dave

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Re: '13 CVO Stage 3 ...... Low hp and bad mpg.....any ideas?
« Reply #29 on: March 25, 2015, 09:02:01 PM »

Here is my CVO King,  259E cam, 10.5 HD pistons, Head work By Dewy, compression set for 10.8 to 1, HPI 55mm throttle body, 5.1 injectors, woods lifters, and Fullsac DX head pipe with 2.25 baffles.  I average 45mpg on the Hwy.  Range is 240~260 on a tank.  My best was 48 mpg.

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