Just a couple exhaust questions. #1 - On a stock 08' Dodge 6.7, cat & DPF in-place, will a DPF back exhaust system do any good? #2 - I heard there are DPF back sysems designed to help with EGT's, is this true and if so who are they? Thanks in advance.

 

it wont help.

 

If it does it will be very little


Luke

 

They don't help. The factory muffler isn't very restrictive at all.
I put one on when my tailpipe rotted away from the muffler

 

Yep they very rarely change anything.

 

I appreciate the info. What about the EGT's, I read something, somewhere, about louvers or some sort of spacing placed at some point in the system that are supposed to reduce EGT's, I think to allow freash air to be pulled in. Anyone read anything about this?

 

nope b.s there is nothing inside no louvers but you can dang near by a full system for the price of a cat back just sayin

 

get a dpf delete and and a 5 inch turbo back man