OK i need some help or advice, My 97 camaro Z28 30th aniversary edition acts up when started, it idles real rough, and even stalls, when warmed up, its fine.Also since im new here, any parts advice or mod advice is very apreciated. Also, i belive i need a Computer programer, or a new computer,i think im using a stock ECU, not sure about that

Mods:
1.KN cold air intake
2.8.8 MM wires
3. NGK iridium plugs
3.Vortech Elbow
4. BBK 52mm throttle body
5. rebuilt and bored .40 over
6. edelbrock shorty headers
7. American Thunder flowmaster system
8. highflow Cat