MBRP Cat-Back exhaust LMM

MR SHORTY · 10-20-2007, 05:05 PM

So this basically deletes your muffler with better bends?

What is the difference between filter back and cat-back?

Will this create any problems on an otherwise stone stock LMM?

What will it sound like?

Benefits in MPG as they claim?

eBay Motors: MBRP 4" exhaust 2007.5 - 2008 GM Duramax diesel LMM (item 110179811452 end time Oct-21-07 10:11:05 PDT)

**ob_1jr** · 10-20-2007, 07:01 PM

This one is only a filter back system. It is in red near the bottom of the page. I know some people have removed their DPF, but I have read some guys have had problems while others have not. A filter back and cat back is just as it sounds. I don't know if any company has come out with a cat back for the LMM. Once you start removing the emissions stuff on the truck it gets into a gray area if the dealer will still warranty it or at least give you a hard time about removing that stuff.

**06duramaxkid** · 10-20-2007, 07:47 PM

i have heard of people trying to create a dpf delete tune with efi live dont know if it will work but there has got to be a way around this dpf

MR SHORTY · 10-20-2007, 09:43 PM

http://mbrp.com/products/instructions/S6026.pdf

**ob_1jr** · 10-21-2007, 04:03 AM

OK, but you still have the DPF. That is far more restrictive than the muffler. The best reason to get this kit is to have the exhaust exit on the side instead of almost straight back.