Hi all, I just my car back after my second ZF catastrophe. The car is surging under part throttle, by surging I mean the revs are rising and dropping a few hundred rpm as I accelerate off boost. Even with cruise control its quite pronounced. I have an engine light for an O2 sensor which I have replaced as well as the o2 loom to no avail. I have sprayed Conyact cleaner through the plenum and reflashed the ecu and even rewored my throttle body. The car has a new stage 2 BTA ZF box and heavy duty std lockup torque converter. running a process west plenum,kit. Please help, anybody had this issue? also I might add that on full bost the car runs 100% but runs super rich when I let off. To the pointbwhere I can see the black fuel smoke while im at the lights