12.5 lbs boost so far). I'm chasing a Gremlin right now though. The car runs perfect most of the time. Every once in a while, the ck eng light comes on, code 55, runs on the 3 driver's side cylinders only...WTF? Anyway, I eliminated the adapter plug on the PTU and soldered direct to the PTU plugs....no difference! I'm in the process of sourcing another PTU to see if that's the problem.....damn Gremlins!!