Re:390cc's w/ vafc
 

actually honda as well as all cars run very lean from the factory. How do u think they get such good gas mileage. You may actually notice power gains from the 390's if u tune it right

Re:390cc's w/ vafc
 

ya my car is running pretty lean right now. i looked at my sparkplugs and they were white tipped(indicating high temperature and being lean). but i thought that it was just because i had a cold air intake.