Getting power out of the GT3's naturally aspirated 4.0 liter flat-6 is not easy. Even Porsche has a hard time doing it while remaining emissions compliant and they have all the resources in the world. What Dundon Motorsports is doing here is incredible.


Their Performance Package consists of the following:

- Street headers
- Dual cone airbox
- 93mm throttle body
- Center Plenum
- Muffler

The power gain mostly comes up top as expected:


But you do see a nice chunk of torque picked up down low from 3700-5000 rpm. You also see a nice torque gain from 6200 until redline:


They are wringing out every last horse they can.