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.

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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:

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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:

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They are wringing out every last horse they can.

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