I second the 5" expandit kits. I have installed one on both my trucks.

 

I was told the Turbo was enough backpressure for these engines so I bought a 5in Expandit kit for both my 01's. I ended up selling one of the kits to a friend and installed 5in stacks, part of me wishes I didn't do that but I can actually race now without a pipe facing up on exhaust.

 

mbrp 4" is all thats needed even at 683 I had 4"

 

A lot of good info thanks. One last thing, whats the diff between a delete and a muffler besides sound? Is there any hp gain or is it mainly a diff in sound?

 

sound and extra drone in cab with no muffler

 

I have installed several Expandit kits and they are nice for the price.


I have Flo Pro and love the sound of their exhaust.

 

5" to 8" stack

 

Another option to consider:
Dynomax® Performance Exhaust | Exhaust Systems | 2002-1994 DODGE Ram 2500HD, 3500 5.9L Cummins Turbo Diesel WO/Converter: Single - 4" Turbo-Back System, 5" Polished Stainless Steel Tip, Ultra Flo Welded Muffler

Some cool things about this kit:
Made in the USA
90 day risk free trial offer, don't like it? Return it for a refund.
Limited Lifetime Warranty
Right now $75.00 off this system as well.

Thanks and good luck with your choice.

 

Sounds like a winner to me!

 

Thanks for all the info. I ended up going with the 5" expandit kit. Installed well and helped a bit. Next purchase will be gauges. Anyone know of a decent cheaper set up for gauges?