my car was running fine when it was cold then when it warms up it would start misfiring around 2500 rpms well i couldnt figure it out so the only thing i could think of was my opti so i changed the opti put a new water pump in and msd spark plg wires and the car runs PERFECT! ion the way home from the car wash last night i raced this guy in a c5 vett (not a z06) auto and i beat him =] i was so happy lol

anyways i knowthere was alot of guys that have the same problem as me just thought that i might be able to help out by letting you know changing the opti fixed my car

 

good deal and nice run with with your mods i dont know how you pulled that win off

 

well the guy didnt know how to drive first off it was a auto and it was just a normal ls1