Hey there guys, this website has always been so helpful to me with my Cummins I figured I would ask a question about another Diesel.

This is for my Mom, she owns a 1991 Mercedes-Benz 300D and my Dad says she needs a new exhaust. So what I was planing on doing was at the same time as building my Exhaust on my truck I would build her a new exhaust on her car. I was wondering If I should go any larger on the pipe than what It comes stock? And mabye buy a new Straight Through Muffler. It has a turbo on it so I dont think backpressure is an issue just like Our Cummins. I wont put nothin like a 4" Straight Pipe on it or nothin but mabye a little bit bigger than stock just to up her mileage a bit. I plan on going T-304 throughout the whole system.

Any Ideas on this thing? Is it just like our Cummins where the less backpressure the better or what?

Thanks

-Jared

 

yup, 2.5" should be sufficient, but I would see if I could squeeze 3" in there... why not, right?

Forrest

 

Well I am redoing her brakes soon and while the car is up on the lift I am going to see what I can do under there. And see what the stock size Exhaust pipe is. Because just like our trucks, going too big while under a certain amount of HP will actually hurt it wont it? Like going to a 5" pipe on our trucks on stock HP will actually hurt your power. So I am guessing it is the same with this Benz. I dont know what the stock size pipe is, but I dont want to go too large for it.
Also what about mufflers? I want a Stainless Steel and something that doesnt restrict flow but is as quiet as possible.

Thanks again.

-Jared

 

run multiple mufflers...

borla or edelbrock make nice stainless mufflers