Trouble with SE204 cams
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Road Captain
Joined: Aug 2007
Posts: 580
Likes: 40
From: East Tawas, MI
Trouble with SE204 cams
I recently installed a set of SE 204 cams in my 13 Road King. It has Stage I and Cobra PowerPort Duals with Full Boar slip ons and Powervision with Target Tune.
Picked it up from the dyno tuner today and it came back with dismal results. It goes up to 100 ft lbs then falls on its face. Ends up at 65 ft lbs at 5250 rpms. He tried two different sets of mufflers and the same result. The bottom line on the graph is the first run, before tune and after 5 auto tune sessions with my Target Tune, the top is the final run.
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Picked it up from the dyno tuner today and it came back with dismal results. It goes up to 100 ft lbs then falls on its face. Ends up at 65 ft lbs at 5250 rpms. He tried two different sets of mufflers and the same result. The bottom line on the graph is the first run, before tune and after 5 auto tune sessions with my Target Tune, the top is the final run.
.
Last edited by jlb0038; May 5, 2017 at 08:12 PM. Reason: pics
HDF Community Team
Joined: Jun 2006
Posts: 12,763
Likes: 2,597
From: san antonio
If your target tune was way off, the auto tune won't dial it in. Suggest getting the bike on a dyno for a proper tune before hitting the panic button. Or maybe try a different target tune for the baseline. Auto tune is no substitution for a proper dyno tune.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,830
Likes: 7,968
From: poway
Check compression but I'd bet a crappy tune or something wrong with the head pipe.. Cobra stuff ain't the best quality. I doubt it's sumping.
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Road Captain
Joined: Aug 2007
Posts: 580
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From: East Tawas, MI
Thanks for the response. I thought about that. I had the longer ones with the black marks in the exhaust, but started questioning myself about it. I cut them out now and gonna put in adjustables.
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Road Captain
Joined: Aug 2007
Posts: 580
Likes: 40
From: East Tawas, MI
He said it couldn't stop it from going rich on the top end.
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Road Captain
Joined: Aug 2007
Posts: 580
Likes: 40
From: East Tawas, MI
The tuner said he got 8 oz out of the crank, when he checked and when I pulled the crank plug after driving it home from the tuners I only got 4 oz. I was really hoping that was it. I'm at a loss.
Last edited by jlb0038; May 4, 2017 at 06:12 AM. Reason: sp