Originally Posted by
Karlos G
That screw sets your Idle mixture, if it were missing i think you'd have a massive air leak and would be idling badly and running really lean. (someone correct me if i'm wrong)
this sets the idel mixture but has it got anything that sets the fuel when on full throttle as mine is runnig at around 14.0 afr on idle and about 11 on full boost which is abit rich in my opinion.