Originally Posted by Prairiedawg

I'm always skeptical of these claims. If a couple of bolt on's and a software update was all it took to get an extra 60 hp, Porsche would do it and charge $$$. A 997.2 GTS gets 23 extra hp with different heads, intake, and software. Granted they may leave a little on the table because of warranty purposes but probably not a whole lot.

I put a SW bypass on mine for the sound and cannot honestly say there's much, id any increase in performance. The sound is awesome but hp, I'm not sure there's anything.

Any dyno chart worth its salt would need to be by a disinterested 3rd party to have any validity.