Frank Torres

if you remove the cats will you get a check engine light?

Frank Torres

Also, (and I know this is weird) would these headers bolt up to the Akropovic over axle pipes? I REALLY like what the Fabspeed team does but I like the idea of having titanium for the added weight savings.

frosty911

Now that’s a great idea. Two headers catted and non-catted for the price of one.

2PUTT

You select which one you want - Catted or Non - for one price. You can choose to buy the other for an additional cost.

Fabspeed Motorsport

Hey Frank,

Yes, you will get a CEL while the bypass pipes are installed. Our 200cel Sport Cats are no CEL guaranteed.

In terms of compatibility with the Akra. OAP's, as long as they are compatible with the stock headers, they will work with ours as well!

Fabspeed Motorsport

Albeit true, the addition of the bypass pipes is still CONSIDERABLY cheaper than buying 2 sets of non-modular headers.

Truly the best option for those who intend to take full advantage of everything the GT4 has to offer!

Fabspeed Motorsport

In this video, we compare the sound of a stock 2020 718 Cayman GT4 to the same car with our RENNKRAFT™ Modular Street and Racing Headers in the street configuration with our HJS 200 Cell high flow catalytic converters. The car still has the stock GPF filters and PSE cat-back muffler in place. These headers are a bolt-on modification for the 2020+ 718 Boxster/Cayman GT4, Spyder, and GTS. Basically any Cayman or Boxster that gets the 4.0l motor. You will NOT get a Check Engine Light with these catted headers. Hear the car rev, drive-by under hard acceleration, and also hear what it sounds like outside and inside the car under normal driving and hard acceleration. We also compare with PSE on and off.

flynlo

So these are headers only WITH cats…everything else is stock? Damn. Get rid of the particulate filters and it would be even more badass. Thanks for sharing. That is awesome stuff.

Frank Torres

Thank you for taking the time out to answer the question. Customer service like this means the world to a little guy like me. 👍🏽

Fabspeed Motorsport

Thanks, Flynlo!

We have a few clips of our modular headers and OAP's, I can confirm that it sounds Incredible!

Fabspeed Motorsport

Anytime, Frank!

Always here to help.

flynlo

Then that just may be the route I take.....when I am actually in possession of the car!!!...hahaha!!!

Fabspeed Motorsport

In this video, we compare the sound of a stock 2020 718 Cayman GT4 to the same car equipped with our Catted RENNKRAFT™ Modular Street Headers in, Over Axle GPF Delete Pipes, and Valvetronic X-Pipe Exhaust. This full exhaust system is a bolt-on modification for the 2020+ 718 Boxster/Cayman GT4, Spyder, and GTS. Basically any Cayman or Boxster that gets the 4.0l motor. Hear the car rev, drive-by under hard acceleration, and also what it sounds like outside and inside the car under normal driving and hard acceleration. We also compare with PSE on and off.

GT4Lover

Have you guys dynoed this setup yet? I'm interested to know the numbers because I noticed in your dyno video with just the RennKraft headers it made the same power as your full system ( OAP, Comp headers, Valved exhaust ) as well as the same/more torque. We need the numbers!

Fabspeed Motorsport

We absolutely have! You will only really see power from upgrading cats and the rear section, OAP's just increase the quality/volume of sound. *OAP's do gain around 5whp but that is negligible*