I need to revise that. I had an Evotech TCU but I couldn't make it work for me. It shifted slower than stock and worse than that, I kept hitting the rev limiter in the PCM. MY PCM rpm limit is raised to 6500 rpm and the TCU was set to shift at 6400. Too close together. When I swapped in a 3:27 the TCU came out and another TCU went in. I'm back to stock shift points. On my car, the extra 400 rpm was worth 20 hp. If you can get it to work, power is there. I haven't been back to the 1/4 mile since swapping in the 3:27.

Les