97 gtp misfire/shift issue

[Bluemagic]

I think you just found your problem.
MSD coils are notorious for causing issues like misfires and other strange things. You have a set of stock coils to see if it's the coils? Why'd you change the coils?

[Wilong]

The car will actually run right to red line under hard acceleration before it shifts but over 3k just starts running like I dropped it in neutral or something, but if I'm driving like a normal person, which I never do it runs fine...

[Wilong]

Yea I scanned it the while I drove around and no codes, even the typical cat code didn't come on!