Sorry, I had to start a different thread as I have an issue with my Fabspeed Catbypass for my 958 Cayenne S. I just installed mine today and the oem clamp doesn't fit properly. It clamps onto the Fabspeed catbypass pipewell but when I use the clamp to clamp it on the oem end, there is a bit of a gap (6mm) which causes leakage from the pipe. Does anyone have the same issue? My friend is a tech and when he put it on, he tried to clamp the oem end as tight as possible but again, there is still a gap.

Here is a sound clip from my catbypass:

Watch "Porsche Cayenne S 958 Fabspeed Catbypass" on YouTube -

 

https://docs.google.com/file/d/0B0I6...p=docslist_api

https://docs.google.com/file/d/0B0I6...p=docslist_api

https://docs.google.com/file/d/0B0I6...p=docslist_api

 

Is it possible you mounted the pipes on the wrongs sides?

 

I'm positive that the two pipes were both installed on the proper side

 

Never mind I fixed the leak. I used some sealant to seal the gap up and no more leak! The car still sounds quiet in the cabinet with a little more settled sound. While you're driving with sports mode, this thing sounds mean and aggressive!

 

Had the same issue with my clamp not fitting right causing a leak. Looked like the clamps were warped as they weren't as rounded. I bought a new set of clamps from the dealership and had them fitted on and that fixed the issue.