Is it worth it to get straight cat bypass pipes for a cayenne v6 2008 will i feel a big difference in power and can? i have custom exhaust and i love the sound and don't want it to change will this make it much louder and change the sound a lot? Will it void warranty and i need to take it off and on for emissions tests?

 

Some people claim gains in the 15HP range..I call BS. I purchased my straight pipes for the sound.
If you're happy with the sound of your exhaust i'd save the $600.00 and skip the pipes.

 

BTW- you will still pass Emission Testing with your secondary cats removed,

 

alright thanks are yours installed yet?