ok so i have a 2nd gen 3sgte in my 6th gena and i cant get the idle down its stay around 1800 , as it sits at the rpm fuel ratio is 10.5-1 and soon as throttle is touched it drops to 9s and when driven it shutters and bucks around 4 grand also will miss and cough when just reved up in park
compression is 170 across the board , new plug wires cap and rotor so am not sure what problem is any idea would help thanks

bov recirculated? i know bov can do some nasty things if not working right on a 2nd gen with the AFM