I have one for an 85 Camaro/Firebird but are the ECU's the same on an 85 and 86? If so how do you install it?

 

It's useless.

The '85 TPI used the 1226870 ECM. Your '86 should have a 1227165 ECM. The two ECMs are quite different, and there is no compatibility between the two as far as PROMs go.

 

Thanks Bro

 

Thank *** too. That chip is garbage is an absolutly a waste. I had one in my 91 when I bought it and the car had nothing but problems. After messing with it dying after it got hot, horrible gas milage, error codes, and whole bunch more problems, I found that chip. Took it out and, no lie, my car ran 100 times better. With the stick chip I had better gas milage, acceleration, and the car stopped dying on me randomly when it got hot.