like it says i am having a problem with my GSR,The vacuum guage was showing O at idle so I searched and i found an undone vacuum line, I connected the line butt now its going to around 10 vac,, usually it goes to around 20, if i feather the pedal it will rev up but then come back down,when the car's idle falls it will go to about 18-20 in/hg of vacuum then right back to10 or so. seems like there is a pin whole leak somewhere, i pulled the plugs and there BLACK, guessin that’s due to it running so rich. Just to be sure it wasn’t a gasket leak i did a quick comp. check and 1=176/184: 2=176/178 : 3=185/184: 4=180/178 did each cylinder 2 times. (the engine runs 9.8:1 Pistons), i thought the ruff running may of been the uberdata, so i pluged the stock OBDII ecu in and had no cylinder misifre codes, only the O2 code 41 is present. fuel presure is good, and steady, and all injectors are firing! idling around 350-500, and yes the RMP is very unsteady...black smoke pours out the exhaust. i cleaned my plugs, burnt a new eprom eliminating the O2 sensor. i get no CEL's,it idles much smoother now. but when i hit the gas it dies...even with the stock ECU it did this. if i tap the gas rapidly i can make it build to about 5k rpms but as soon as it reaches that point it dies down and nearly cuts off. i am stumped,, i checked over 3/4 my hoses today, (pulled them off hooked them to an air pump and presurized underwater)
PLEASE HELPPPPPPPP