Quote Originally Posted by bluegtp91 View Post
If a pullied, intercooled, exhaust car isn't making north of 275 FWHP...especially on a 3.0" pulley...I'm gonna say...hmmm...get a solid tune. But, figure in drivetrain loss...you'd be around 300 or more CHP.

Rynoman made nearly 250 FWHP on a 3.4", DP, tune...etc...back in the day. So I'd hope .4" of a pulley drop, a full size IC, and headers, and a good tune would make more than just 25 HP more...even at the crank(should be good for nearly 300 WHP IMO)...since most stock GXP struggle to put down 260~ FWHP from the factory.
I just had mine dynoed. Same mods, came out to 270 FWHP 295 TQ with the 3.0.