I dont no much about jetting but puttting the main jet in right now i have a WB slip on pipe and K&N filter with the air box lid on and the main jet is a 155. I was wanting alittle more power out of it, could i do things with the clip or pilot jet thanks a lot

 

you could try to move your clip on your needle down one position but that probally won't help. your mainjet is about perfect if you ask me. the only thing i can say is make sure your throttle cable is adjusted properly. if there is a bunch of play in it, tightened it up so the carb opens up all of the way. besides that, its time to put a cam and piston in it.

 

ok thanks

 

http://www.yellowdogracing.com/techstuff.htm

 

Is you quad running to rich or lean?...I would try a 148 or 152 depending on what elevation your at...Im running a 148 in mine with the same set up as yours and the plug looks great and it has instant Acceleration..