4 inch mbrp exhaust on dodge cummins
 

I've been looking at a 4" exhaust system for my '02 dodge for awhile now. I was wondering if anyone could tell me there experiences with the mbrp T409, what is sounds like compared to stock, how difficult it was to instal, and was there any noticeable performance difference.

not hard to install at all, sounds AMAZING, and you will get tons of compliments on the sound. (with turbo-back exhaust, it is very loud, which i like, but your opinion may be different)

overall it sounds great, not hard to do, and might notice a very small throttle response difference. it allows the truck to breathe better.

So you did notice a throttle difference? I'm guessing that it sharpened up alittle?

yes, it became a little bit more responsive.