raptor684
01-06-2008, 10:18 AM
I put the full GYTR system and K and N filter with the air box lid on on my daughters 250 and am trying to get the jetting dialed in, the jet kit from yamaha seems to be way off. Has anyone got theres dialed in or know something I dont! I read a deal on the internet that said a 30 for a pilot jet, and 170 for a main jet with air box lid, has anyone else seen or tried this, was going to order the jets and try it but that seems like hell of change just for pipe. I read at 7.5 rpms with full system is pumping out 17.2 hp on the dyno.