91 camaro rs, pass key decoder module? vats? will start but, give it gas dies immedia

[dylanm13]

originaly I bought the car for cheap it had been rear ended.
other than that is runs great sounds great engine is very clean somebody took good care of this car, and was steadily improving it. It got rear ended while it was parked over night. the people that owned it decided they were not going to put as much money as it would take to fix it cosmetically..........(background) I've replaced the computer, 1/2 the fuel injectors, lock cylinder, key & the chip in the key. the car would not even try to start before having the computer replaced. afterwards it would start but I soon realized, the chip in the key was bad so I figured out how to bypass it with this web site, it worked fpr a couple of days, then the car died. I took it to the mechanic he did the key ect. didn't fix the car but, it will now start and Idle very slow and hard, if you give it gas it dies immediatly