Please help, i have the following problem, i have an 06 drz 400SM with a pro circuit pipe with header, took off the airbox restriction and the bike bogs and stalls when i blip the throttle from idle, i've tried to adjust the air screw but had no luck, i still have the stock jetting, the bike works fine every place else but when i stop and go most of the times the bike bogs and stalls.
Please help, i don't know what else to try.