Misfires when engine warms up... help!!!

[Shnukemz]

i have a 94 Z28 with the lt1 in it. it runs really good when the motor is cold but after about 5 or 10 minutes, it misfires badly and shoots raw fuel out of the exhaust. i put a new optispark in it, new plugs and wires, new o2 sensors, and new fuel injectors. the mods i have are a mac cat back, hooker headers, grenatelli maf, k&n intake, trick flow elbow, and a shift kit. it ran fine before then oneday, it started doin this. anyone ever had this problem or knows anything about this??? please help me out

[2000pontiac6]

wrong forum post in lt1 section

[bandit95]

mine does it because the o2's are messed up on my 95

[juicedimpss]

if it is more evident when the car warms up,id look into the coil.

[fast94z28]

coil or ignition module seen them both cause similar problems

[Shnukemz]

yeah i have tried damn near everything except the coil so i guess thats the next thing to try... thanks alot guys