Hello all
I own Cayenne S 958 and i have Stock Exchaust the last exchaust from the sides come out only one pipe right and left sides
i was wondering if i open the second hole on the back exchaust like GTS and Turbo,
Should i get the better Sound ?
Please check the attached photos

 

What did you find out?
Did you end up doing it?

 

im assuming it will, like on the 911's when you modify the stock. there wont be a valve though so it will be louder all the time. ive compared my CS exhaust side by side to a GTS and it looks the same other than that welded part is opened and the butterfly valve. it works on the 911's im sure it'll work on the cayennes too.

 

Is there a resource or write up somewhere regarding aftermarket exhaust modification options? I love the GTS exhaust, but would like it a little bit louder/more aggressive...

 

I suggest searching for Tubi or Akrapovic.

There are many threads that provide some useful info... I know since I was reading up on this recently.

 

Has anybody done (or know about) the secondary catalytic convertor replacement with straight pipes?
Fabspeed has it on their website...