TECHNICAL DESCRIPTION
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](https://cdn.shopify.com/s/files/1/0075/5046/8132/files/GT4_Race_ProTune1_480x480.jpg?v=1582134211)
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