my current problem is basically limp mode. no codes right now. is not revving above around 3500, and if you rev it dies out. does not sound right. it is like it is stumbling when running. idle sounds okay, but not normal. have changed plugs and wires, tried another coil, a whole different distributor, and had the chip in the ecu checked. the car has been running fine for the past 6 months since the last time i had trouble, which turned out to be a leaking fpr. and fine before that for 3 months or so. i know it is not something wired wrong, or not wired up. tried pulling injector plugs and there doesn't seem to be a bad injector. but there is an exhaust leak, and the car is running so rich that it burned our eyes while trying to test them. the last work done on the car by me was oil change a few weeks ago. also had some exhaust work done right after that, and they put in a new o2 bung, it is still intact and wired up. replaced map and tps, map made it a hair better, and tps was worse. my tps is good. checked wire connections, and vaccuum lines. have not found anything loose or missing. if anyone has any advice please help me out, car is 93 eg8 with chipped p28, yes just got chip checked and reburned. no difference.. no idea where to turn, MAYBE bad ecu? doubt it though, but anyone with advice please help. and YES i've searched, but all the threads i've found have NO answers.. thanks!