Diagnosing sumping
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Cruiser
Joined: Nov 2014
Posts: 182
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From: East Tennessee
Worth a try. You could even retard the cam by 4* for a 60* intake close. However, it the tuner can't get decent numbers and a respectable power curve; time to change tuners. JMHO.
As to your comment about the head work. You are pulling the heads anyway to change valve springs so at least have the chamber volume measured. The work I am referring to isn't that costly and doesn't take much time and is not "just to run a cam" but to open up cam selection to many more cams.
As to your comment about the head work. You are pulling the heads anyway to change valve springs so at least have the chamber volume measured. The work I am referring to isn't that costly and doesn't take much time and is not "just to run a cam" but to open up cam selection to many more cams.
You have been right all along its a tuning issue.
HDF Community Team
Joined: Jun 2006
Posts: 12,779
Likes: 2,609
From: san antonio
Found a local shop (Al @ Diablo V-twin) he accessed the timing table(s) and MAP and increased the bases and enabled Anti-Knock bike woke up a little, but never showed the Anti-Knock engaging. Bumped up the timing again, ran the flight again and still no knock and a little more power but around 4k the power is all I'd ever want. I think more fuel and more timing up top is obtainable but not necessary or sustainable/ compatible for engine life.
You have been right all along its a tuning issue.
You have been right all along its a tuning issue.
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Cruiser
Joined: Nov 2014
Posts: 182
Likes: 0
From: East Tennessee
Thank you Sir for all the patience and hints towards finding another tuner.
Road Captain
Joined: Oct 2011
Posts: 523
Likes: 1
From: kingston ontario
he did that without a dyno?.... keep him.
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