Originally Posted by
Razathorn
I'd rather just get the 2013 and be done with it honestly. The motor runs great when actually racing once warmed up and when you get the LSN where I like to leave it based on experience with the jp-4. I just know it isn't a good match on this pipe and the low end shouldn't be such of a compromise.
Iwas going to say the other thing you could try that might work is closing your air gap some. The way I have mine set right now you can hardly see any gap at all with the restrictor in. This will lower your idle so your forced to lean out the bottom some. One of the guys at our track is running one with a JP 4 and he as no problems at all. He is actually quicker than I am in a few spots on the track.