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 found in our exhaust development and testing of the 991.2 GT3 and RS that they are intake limited both through the factory airfilter box and through the 82mm Throttle body. A bit of history. The Bosch 82mm Throttle body is the largest Bosch...

Based on the development on the 981 platform, some enterprising customers have found improvements to their 3.4L 987.2 DFI engines. You will need to independently source a tune to ensure the car runs right.