I am getting closer to solving this headache.Really rough sporadic idle 500-1500 or so rpms, dies once heated up and gas is pressed. Vac is around 12 at idle. I have chagned every vac hose known to man, and stillno luck, disconnected the fmu and tried just the stock fpr, no luck.
I did a compression test, 190, 190, 190, 190 while heated
I have a big black stain on my wall and when I take the sprak plugs out, they are dripping with gas and have plenty on black carbon on them, even after changing them out, still get carbon after 10 minutes of idle.
Me and a few others thinkit is fuel pressure related, can the stock fpr just stick open, or the inline pump overwhelm the stock fpr.
If so what typ eof fuel pressure reg. do you suggest, b and m, sx, paxton?
Opps, 91 teg, lsvtec, drag gen 2 kit, pr3 ecu.

 

 

get a fuel pressure gauge and check your fuel pressures.

 

Thanks god...I found my problem. Missing link connectin was real loose, vacuum hose jsut slid right off. Got vac up to 18-19 range and the car purrs like a kitten.