On our 3.8L test car we increased the power from 400whp with race headers alone to 440whp with race headers.   We recommend a high quality header (like our race or catted header) that moves peak power to 8300-8500rpm   * Fueling and ignition...

We based this design on the fabled 997 4.0L GT3RS.  It features dual conical air filters from the 4.0RS.  In order for you to keep your stock decklid we created a balance pipe in the bottom area of the airbox to allow air to...

Tune your Porsche with a Cobb AP! Includes: Cobb Accessport - $1095 (997.1) or $1195 (997.2) Dundon ProTune - $795