So if he's claiming that and pulling like he was, so be it. Goto any Stang site, modding is easily done. Stg V+ is where's it's at for holding your own nowadays. With stock sports cars coming out with big power, it seems Stg III is a 90's thing. Do you know what your car puts out as far as a dyno number? Does it seem to hold steady boost pressure? 245/45/17 Nitto 555 on all 4's?