Heh, uhm, my 94 z28 runs pretty good now. Decent anyway. But when I run it hard, and get the RPMs up, it starts to jump around and it feels like it's missing or something. It does it when I try and accelerate a little bit, but when I push the pedal down as hard as I can, it'll take off. Any help?

 

Try a new coil wire first.Then plugs and wires.My 02

 

mine would misfire somewhat like that, turns out to be that i had 87 octane in it

 

2nd the coil wire!

 

Possible the opti is going out?