Hello guys I have a gtm stage 2 sc and recently been facing problems with the AFR reading at idel, first of all the rpm Is shaky, and the afr sometimes reads between 17 and even goes up to 18 and at idel the car sometime cuts off kind like it will turn off then goes bk to normal how to explain it kinda like the belt losesns then tighten the car is hesitant and kind of laggy sometimes dont know if this is a tunning issue mechanical where should I start looking p.s dont know if this causes issues but im running a stage 2 gtm sc but the pully im using on it is the stage 1.5 pully please advise guys on where I should be looking
