Ok. Finally tracked my problem down to the ESC module. Cannot find one anywhere. Delco warehouse says they are unobtainable now but were $72. Standard Ignition wants $238 for one of theirs if someone can find one. Borg Warner Ignition is trying to locate one and that is $82. Going over the wiring schematics, the wiring placement and colors are identical, just wondering if anyone knows what the calibration difference is between hotair and intercooled. I have 2 extra hotair ESCs and the calibration stickers are gone off them but part numbers are 16022614 and the 87 ESC module is a 16051654.