Have Gen v, vs cam setup, 60 injectors, 90 springs, and supporting mods running on a 3.4 for 91oct with 0kr but about 14-15 of timing due to tranny issues couldn't get the best tune, but it is good for now, till Paul gets the other tune done for e85 and have my tranny fixed should be a lot better. Running autolites 103, you should run the 104 if 91oct.