And OMFG can u tell the difference. Put it on a regular dyno to wear it in the shifts a bit before i took it out, since i heard its recommended to wear it in a bit before you think about slamming it. haven't slammed on it yet and don't plan to for about 400-500 miles , I'll slap shift it a bit to get it use to it. and then when i pass the mark, Ima try it out. But right off the bat I can tell a difference. Cant wait to see what this thing can do. The stang is really alive now. It's wild. If I knew it was goin to be this much difference I would've put it on my first mods.