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Discussion Starter · #1 ·
I've got a Dobeck Gen2, full HMF sport exhaust, and ProDesign with K&N, no lid. At half throttle in first or second gear, or even neutral, the engine surges in and out. The bike runs pretty good but feels a little weak on top. Plug does not indicate rich, but maybe a little lean. Would this cause surging? Anyone else experience this?

It will run just fine at less than half throttle, or at full throttle, but if I'm running along in first or second gear at half throttle, it will surge.
 
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