My 94 lt1 Camaro misses when giving fuel and will backfire when you let off the fuel. I have changed the ignition control module, coil, plugs, wires, and even changed the optispark three different times thinking I may have got a bad opti. When I changed the opti it will run great for 20 30 minutes then starts the same thing as before. Someone help me before I set it on fire lol

 

I already moved your other post from "New Member Intro" to "LT1 Based Engine Tech". Please post a topic only once. Too much confusion with multiple posts on the same problem.