I have a 93 z28. sometimes at high rpms in the red it will bog down and wont shift. I don't think it's missing, it works great until the high rpms. 0-60 is just over 8, so it's not getting the power it should have.

Thanks for the feedback. Grant.

 

so what your saying is your in your tachs redline when this is happening? details about your car would help.

 

If your tach is "in the red", you may be hitting the rev limiter.

You need to add a "signature", with basic info about your car - year, model, engine, trans and ALL major modifications. Its hard to help without knowing the details. Oddly, we have people who have been here for a long time, the don't even own F-Bodys, and they refuse to provide the basic info in a "Signature" even though it would help them get answers.