I think ill play with the air screw. Im going on a ride wed through fri so i can try different settings. But right nowit isnt to bad.

I draged raced my friends stock banshee and i was right there untill 4th. Mabee with some more tuneing i could beat him. [img]i/expressions/face-icon-small-smile.gif[/img]

 

Just remember that the air screw will affect the intire RPM range. The main jet just effects the last 1/4 of throttle. I have a stock 400 ex with a WB "E" series slip on, K&N with outer wear and no air box lid, and I run a 175 main jet and it runs great and after 25 hous the plug looks good.