of course they both supposed to be the same main jets!!
if you still have the air box lid on, unmodified, with a k&n and pipes, at sea level, for the summer, id try a 260 main to start and richen your needles up one clip down from the blunt end, might be rich, but always sart rich and lean it out if need be
if i was you, id put a 280 m ain in,ditch the lid and get some air to that bitch
whats your elevation anyways? that has alot to do with it...
my suggestions are based on sea level |