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Thanks gmc. Not bad for a Stage II kit with stock heads. I have seen SLIGHTLY better numbers from others here, but I am really happy with this build and highly recommend the guys at LVHD.
I routinely get 43mpg and-only once lol-squeezed out an amazing 48mpg. I have no delusions of challenging 'busas, but this bike delivers smooth linear throttle response, pulls like a freight train, and even after 35K miles, it always makes me smile whenever I twist the wick.
Everyone has heard of Hiro Koiso and his Bonnieville records, but Jeff Bates is a great tuner as well. Although Jeff has since moved to the new Redrock store, both of these guys really know their way around a SERT map.
Good luck with your build mikestreet. Don't give up on your bike...it looks like you have a nice build. You just need to find someone to perform a little magic on the laptop and dial it in properly. Feel free to use my dyno sheet for comparison purposes.
It looks like I need to get mine dialed in a little since we have the same set up and they say my # are what to expect here in SLC, I get around 38-40 MPG but I run fr 4000-8000 feet above sea level and a lot at 80 MPH. It's too hot to get dn to Vegas right now but maybe this fall fora tune. Thanks.
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07 FLHTC 103" STAGE II, SERT W RTD, 84 HP 101tq.
92 FLHTC 175K MILES, X BRAND 235K MILES, FIRST BIKE 49 INDIAN, Tot 435K miles, USAF 67-71
Here's the dyno on my old 103 build - the Wood 6-6 is a great cam!
I had basically the same build as yours (basic Harley 103 kit with flat tops and a PC III) but with Rinehart true duals. You should have better numbers than mine.
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2007 RKC, 103, 10.5 to 1, HPI 51,Wood 7 h, PC III, crank balanced and trued,Timkins, ceramic coating, Hillside stage 3 heads, Fat Cats, Feuling lifters, Jagg oil cooler
PS - I see that you are running 10.5 compression. That should make those cams sing - even better numbers. Totally agree that you need to find a better tuner.
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2007 RKC, 103, 10.5 to 1, HPI 51,Wood 7 h, PC III, crank balanced and trued,Timkins, ceramic coating, Hillside stage 3 heads, Fat Cats, Feuling lifters, Jagg oil cooler
gmc, They told me I could have easily obtained 100/100 with 2-into-1 pipes, but I wanted true duals. Also, you don't need to wring out every last drop of power. My bike was actually "de-tuned" slightly to deal with heat and PING in the summer. If you do call LVHD, talk to Rudy (service writer.) He will treat you right.
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2007 FLHTC Vivid Black
103" Big Bore Stage II Kit
flat top pistons, 255 cams, SERT
Rinehart True Duals, AIM V.P. Clutch
Max Power = 94.45 Max Torque = 113.70
Last edited by Black Flag; 05-20-2009 at 10:06 AM.
With that build you should be able to get at least 38-40MPG. I have a build close to yours and get get about that rinding 80+ on freeway with 4-5 cold starts per tank. Get a retune.
Well, it looks like my suspicions are confirmed here. There are too many dyno sheets out there with significantly better numbers. It looks as though I'm getting the same performance as a well tuned stage 2!
2 problems:
1. Anyone approached a dealer about retuning/refunds on a tune? They claim anyone can say anything on the internet and generally dismiss it as a reliable source.
2. How do I find a good tuner in San Diego?
I agree with most of what has been said with regard to the tune in question here.
As far as the W6 being too small for a 103... BS!
One other thing that has not been questioned is, what exactly does "mild head work" mean. I have seen budget headwork flat kill a motor (worse then stock heads). Just as easy as a "good" set of heads can make a motor sing, a butchered set can destroy the performance of one.
As Carl (& others) have mentioned, get the tune right (should see 40+ mpg) so you don't hurt you motor ~ this is important. Many think rich is better than lean... that is certainly debatable.
Good luck!
Lookup Bob @ RC Cycles. He's in Ca. somewhere and is one of the best out there.
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Hint for today (and tomorrow!): ALWAYS use components that COMPLEMENT one another!
Many think rich is better than lean... that is certainly debatable.
