blown5.0
Founding Member
12:1 is rich for a n/a combo, 13.5 is where it should be. keep the 30lbers on there, just drop the pressure to reduce the fuel flow, 28-30 psi would be close. if your a/f ratio is stable across the rpm band then a chip would be a waste of $$, just use the fuel pressure and base timing to get it tuned.