So here is my final review about these Dundon headers:
- First of all, these headers are beautiful.... they look so good that I just want to hang them on my wall. A quality product! Comes packaged nicely with a set of K&N filters.
- Install by the shop was smooth like a breeze, no fitment issues at all. Took around 2... read more
Kareem, Bahrain GT4 Race Headers
997.1 GT3/RS 997.2 GT3 Dual Cone Single Opening Carbon Fiber Airbox
997.1 GT3/RS and 997.2 GT3 Single Opening Dual Cone Carbon Airbox
Click on a photo to enlarge.
Free up power and add some beauty to your engine bay with the Dundon Motorsports Carbon Fiber Dual Cone Airbox. We based this design on the fabled 997 4.0L GT3RS. It features dual conical air filters from the 4.0RS. In order for you to keep your stock decklid we created a balance pipe in the bottom area of the airbox to allow air to flow to both filters equally.
On a stock car this airbox will free up about 5-7whp
On a Dundon Race Header equipped car, this airbox is good for about 8-10 whp!
Note Fan Part 997.624.056.05 is required for fitment on cars with the original fan (most of them have been replaced by 997.624.056.05 by now...) If you need to source it or are unsure, you can order our option that includes a new fan slim line decklid fan from Porsche
Below is the OE fan the car came with.
Below is the upgraded thin line fan: