Just notice that my Panamera GTS exhaust sound the same no matter the sport exhaust bottom is on or off. It’s like it’s always on sports mod. Any idea?

 

After the car is warmed, look into your tailpipe (2 outlets on each side). With Sports Exhaust "off", the inboard outlet should have a flap (easily seen) in the closed position. With Sports Exhaust "ON", the inboard outlet flap is in the open position.

 

I would love to have issue like yours

 

Some owners mod the exhaust by removing the vacuum line to the exhaust flap so that it is open all the time (in the louder position). Check and see if the line is hooked up.

 

Good point, somehow I forgot about that.... BUT, are you sure that by removing vacuum line flap will stay open, not closed ? I'm asking because I had Audi S8 with V10 engine and flaps were opening on higher revs only, when creating vacuum (was no button for sport exhaust), to keep them open all the time I had to fix them in open position with a piece of metal wire.

 

My Bentley GT's had the same vacuum exhaust and when you disconnect the vacuum line the exhaust valves opened and got louder. Panamera is the same.
Check out this site, there is a video of it.
http://www.insanegarage.com/cheap-fr...-sound-louder/

Paul

 

Vacuum line is connected but exhaust flap is open all the time no matter the switch is o or off... I will have to bring back to the dealer =(

 

I would suggest you manipulate the lever on the exhaust by hand before you head to the dealer, sometimes they can get stuck/stiff with road grime. Just push on the rod/plunger, it should move back and forth with some effort.

 

Will do. Thank you buddy!

 

Thanks a lot Paul, I can't believe that I've missed this info on Insane Garage webpage !!!
A while ago I was even thinking to try this module for Sport Exhaust button on my Panny .... https://www.6speedonline.com/forums/...ml#post4575439

 

Just got call from the dealer and was told that the vacuum pump fail. The engine light came on after 30 mile after i got the car back from the dealer for Engine Mounts and Sways bar links repair. This makes me wonder .....