Okay, so I just bought this 94 gt about a month ago, only has 30k miles on it and you can eat off it its so clean, all wiring included. Has the 302, stock bottom end, but has gt40 heads ported and polished, trick flow street heat intakes ported and polished, b303 cam, 1.7 roller rockers, fenderwell cold air intake with 76 maf to a 70mm throttle body, 24# injectors, smog pump delete and thermactor holes plugged, and has moates chip in it. SO! Here's my problem.. the damn thing runs AWESOME and strong going down the road, no surges, nothing, but every time you go to shift, every time you depress the clutch, instead of the rpms falling between gears, they raise about 300rpm and stay there, any time you press the clutch in it does that and the rpms just hang for a few seconds. If you're in neutral and rev it up to any rpm it'll stay at whatever rpm you rev up to and hang there for a few seconds before falling back to an idle, sometimes it'll fall to an idle, other times it'll just cut off. Damn near EVERY time I get to a stop sign/light, or go to pull in a driveway or parking lot it'll just die, ESPECIALLY if I have the ac on. Sometimes, like if you're pumping gas, it'll be sitting there idling at 850, 900rpm, and surge and the rpms will fall to around 600 and then catch and rev to about 1200 on its own, sometimes it'll idle back down, others it'll just cut off.. I've replaced the tps (and checked voltage, its at .98) and replaced the iac on it, it has new plugs, wires, cap, and button, I've cleaned the MAF, cleaned the throttle body, played with the str8 slot screw behind the iac to adjust air, the more I unscrew it, the faster idle will get, the more you screw it in the slower it gets, I've tried both ways from bottomed out and backing off in 1.5 turn out incrimates and road testing until I got to the end of limit and its still the damn same. All vacuum lines are new, no vacuum leaks at all. I contacted the kat I bought the car from and he said it has always done the hanging rpm thing since he bought it new and he just dealt with it because he couldn't figure it out, he claims this cutting off thing has never happened, who knows if thats true or not, I don't really care, I just want to fix the damn thing! I love the car and want to keep but I can't stand something like this its driving me crazy. The cars a real head turner and its embarrassing to go anywhere on it cos the mfr will cut off at any time. I've learned to brake with the right side of my foot hanging off the side of the pedal so I can use that side of my foot to hit the gas to catch it from cutting off when I come to stop, and even when doing that, if I catch it in time b4 cutting off and tap the gas, then it revs to about 1200 and holds it for a few seconds b4 falling back to an idle, and ill have to catch it another 2 or 3x before it'll finally idle and thats embarrassing as hell sitting at a stop light with ppl looking at the car giving a thumbs up and the mfrs surging about to cut off and holding rpms. Please somebody point me in a direction. I'm at my wits end with this bitch and have no clue what else to do with it. I've ran the timing light on it also and its 10 btdc so that should be good as well. Also, if I try to do a base idle relearn, I can't run it with the iac unplugged, any time u unplug it it cuts off immediately, if u unplug it first then go to crank it it won't run at all. You boys are my last resort.. if I don't get this thing figured out soon I'm going to sell the mfr. I can't stand something that won't act right..