Hello, It's been a while since I've been on the site ( computer problems ).

I have a 94 z28 now and I am having an acceleration problem. I think that a four cyl. could beat me now. I thought it might be the opti so I replaced it. It still isn't any better. I scanned it and there are no codes. If anybody has a suggestions it would be great. Thanks, Shawn

 

now thats a shame....if a 4 banger could whoop on u!!!
um....How bout, Plugs,Wires, and a clogged cat convertor. I know when my cat convertor went bad i punched it and the car had NOOOOTHING!!!!!!!!
Check fuel pressure also

 

new injectors,fuel pressure regulator,new cat,new wires and plugs when I put the headers on, good compression in all cyls. I am stumped

 

Wore tranny if its an A4....Maybe...

 

The tranny shifts fine. I'm leaning towards electrical but without tripping a code who knows.

 

Can anyone out there help me? This car is driving me crazy.

 

Can you be more specific? Do you have a scanner? Are you getting any knock retard? What RPMs do you feel this at? Does it do it constantly or only when the car warms up? What throttle position does it happen at most? Does it ever disappear?