[MATCHBX]

Grounds can be a funny thing. I used to get a bad O2 code in my CRX because the ground for that particular circuit was to a bracket on the tranny right next to the starter. When I swapped trannies I forgot to clean off the bracket on the used tranny I put in there where the ground goes. Grounding could definately be a small part of it.

I also have to go with one thing JET brought up, monitor fuel pressure at all boost levels. We are running into a problem with a Safari Van that wouldn't run under load. It ran fine when it idled (kinda stumbled a little but not bad) but when you hit the gas it killed. We dismantled the throttlebody and found the regulator spring broke into 3 pieces. I'm not saying yours is broken but maybe the pressure isn't high enough to keep up with what's needed at the higher boost levels. I could be off the mark here, but I didn't read anything in your mods about an adjustable FPR.