ShaneM

So this is funny. My neighbor walked over the other day to check out the new stang. He asked me what exhaust i put on it since i bought it. i told him i hadn't changed it. He said that the car was much louder when it starts than it was when i bought it home. After i started paying attention to it, the exhaust is much louder now than when i first got it. Car has 500 miles on it now. First 300 miles the car stank horribly when i stopped after driving, horrible burning smell from the exhaust. My 5-year-old daughter said "you car smells like poo poo daddy" the first few times i drove home, no more smell now though.

He will really hate me when i get around to adding that roush extreme exhaust system.

Rollin Thunder

Its just the break in stuff wearing off. All my cars did it when new. Smells like burning rubber right? I know that with all exhausts it takes a few hundred miles for them to break in and settle. So I would say thats normal.

Snakebite64

I would not know as the first mod on the first day or two is to lower the 4x4 and rip off the exhaust for something deeper/louder.

Gene K

Exhaust seems to get a little louder with time in all of them. No packing in the mufflers that I know of so only thing I can come up with is that maybe it has something to do with the cats breaking in. Then again maybe its all in our heads.