Join Date: Oct 2009
Location: Springfield, OR
Your jetting (in my experience) is too rich. It will hit a rev limiter in neutral or when it thinks the parking brake is engaged. Pb rev limiter is an issue on most of Yamaha bikes.
Your jetting assuming stock head should be closer to a 168 main and 45 pilot. I also run the needle out of the yz (ncvq I think) one notch rich of center.
Fci, PC5F/I, monster exhaust, +2 Cuervo head, HDD5150, 54mm throttle body, 105.5 14:1, +8 swingarm.
Sparks big core, k&n no lid, yz needle, yz timing mod, +4 swingarm.
Cuervo 870, lectron, msd, monster megs, single a-arm lightened chasis, +14 swingarm.
Cuervo 930, lectron, msd, db fab titanium chasis.