Originally Posted by skirk55
I removed my cat and now I want to do a muffler delete. Will it be to loud? Will my mpg drop? Will the bottom end power be gone because of the reduction of back pressure? Any help please I do not want to do something and get bad results. I work on my driveway and it is very cold!
The turbo on these engines creates enough back-pressure that there is no concern in that department when removing your cat and muffler. You will have all the back-pressure in the world from your turbo.
As to the loud aspect, your turbo whistle will get a lot louder at idle. And at full throttle it sounds like pretty throaty. I have a 4" downpipe into 5" stacks, and I drive 25,000 a year with the only "mufflers" being my windows! I love the way it sounds.
Aa per mpg, I didnt notice a massive increase, but I sure didn't notice a decrease!