A7H335

Dear ALL,

I have recently purchased one 2017 Cayenne GTS (958.2), I have noticed that there are two secondary CATs which restrict the exhaust sound of this V6T engine. May I ask who has released the bypass pipe for this model?

So far I have seen Fabspeed released one, how are these straight pipes? Are there any other choices for better sound? Thank you so much!

Best,

Li

deilenberger

Welcome to the forum. I'm going to move your post over to the 958 subforum where it's much more likely you'll get an answer.

Hang on..

Fabspeed Motorsport

Hey Li--congrats on your new GTS! You are astutely correct in that the secondary cats are redundant and restrictive, and limit the sound and performance of your engine. Eliminating them is a simple and cost-effective way to gain performance and add a unique sound to your Cayenne. Removal of the secondary cats results in a throatier and deeper exhaust note. You also get to enjoy more burbles and backfires throughout the overrun. I have a few sets of these Secondary Catbypass Pipes in stock and ready to ship as well! Don't let me tell you about the impact they have on your car when you can simply witness it yourself though... check it out!


This video gives a great comparison between the stock valves open/closed and our Secondary Catbypass Pipes valves open/closed. You also get a few pull-offs and closeups of the tailpipes for detailed sound clips. Cheers!

987part

We just did it and im disappointed,
Barely a change on sound

A couple more bubbles sounds but thats it....

I don't know if its cause its a 6turbo and not a v8 like the previous generation...

Fabspeed Motorsport

Hey 987part! Thanks for jumping in here. Did we have a chance to work together to get this ordered for you? Hard to tell with RL screen names and all. I'll shoot over a PM so we can chat directly! : )

The nature of the engine definitely may have something to do with it, but the video above in this thread shows the great sound that is released from freeing up that restriction from the secondary cats. The ECU may take a few miles to adapt to the change in the system, but you will notice the additional power!

A7H335

I just installed, very impressed!

B.Kish

Is that with or without PSE? I have yet to hear these on a Cayenne S 3.6TT without PSE.

I've come close to pulling the trigger on these but received a lot of feedback that made me reconsider. It's a lot of time and money for something that may not pay a lot of dividends, if any.

A7H335

This is 2017 Cayenne GTS with stock Porsche sport exhaust + second cat replaced by fabspeed straight pipes

B.Kish

Should have read the You Tube header. See it has PSE.

So, still waiting to hear a non PSE car with the pipes installed.

Fabspeed Motorsport

Glad to see you enjoying these, thanks for posting this up! Mind if we use this for our website?

A7H335

It is my pleasure to share this video with you. Thank you very much for making this awesome product!

Fabspeed Motorsport

Awesome, I submitted it to marketing and its already on the website! Thank you!

If you'd be willing to leave a review with your positive impressions, just follow this link: http://www.fabspeed.com/porsche-958-.../#write_review

A7H335

Sure I will. I highly recommend this product to all 958.2 GTS owners