981 GT4/Spyder



Would like to make a review of the products as well as the customer service of Jamie in particular. Summary - High quality products paired with superb customer service - highly recommended! Just a brief background on the car: 2007 997.1 GT3RS Car has about 35000 miles and I intend to keep it for a long time to come. Decided to install the... read more

HerShann - Singapore
997 GT3 Carbon Airbox, Harmonic Damper

981 GT4/Spyder Cobb Accessport with Dundon Pro Tune


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Dundon Motorsports is happy to provide the Cobb Accessport for the 981 GT4/Spyder.  We're Cobb Pro Tuners and have developed a great tune for the Dundon GT4/Spyder Race Headers.


GT4 Dundon Pro Tune

Gains Over Stock including GT4/Spyder Race Headers and Dundon Pro Tune:

3600 RPM: +50 wtq +32whp
5000 RPM: +55 wtq, +52whp
5800 RPM: +24 wtq, +26whp
6500 RPM: +30 wtq, +36whp
7500 RPM: +30 wtq, +43whp

377.1whp on our dyno works out to 438.8 BHP




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