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6.7 Liter Dodge Cummins 07.5-UP Discussion of 6.7 Liter Dodge Cummins Diesels

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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 ... JOIN NOW TO REMOVE TRACER

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  #1  
Old 02-05-2013, 07:30 AM
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Default DPF back exhaust

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.
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  #2  
Old 02-05-2013, 07:50 AM
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it wont help.

diesel pap's Sig:Dodge Cummins Electric Blue Mega Cab
AFE Intake, Smarty, Edge Juice W/Attitude(for gauges), Mighty Diesel Head Bolts, 5" Magnaflow, Royal Purple & Mag-Hytec Deep Tranny Pan

1997 Cummins 3500 Dually ~ AFPA 8000# Modified Street Diesel Class Points Champion for 2011 ~
~ AFPA 8000# Modified Street Diesel Class Points Champion for 2013 ~


& 1991 W250 Dually


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  #3  
Old 02-05-2013, 08:45 AM
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If it does it will be very little


Luke
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  #4  
Old 02-05-2013, 11:36 AM
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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

jdinny's Sig:'08 Ram QCSB 4x4 | 2500 | Bighorn | BlackTec | 4" catback/AFE-Banks | 68RFE | Edge Insight CTS | Smarty Sr ME | GDP S3 | PSM style Airbox mod w/AFE PG7 | PSM Cool Hose| MyGig RER | Fumoto | Home grown CCV |
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  #5  
Old 02-05-2013, 12:09 PM
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Yep they very rarely change anything.

Farmboy 2.0's Sig:2001 Dodge Ram 2500 with 2 Big Shiny Spiny Things, Some Big Ol Sticks, and a Man Pedal!
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  #6  
Old 02-05-2013, 03:17 PM
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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?
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Old 02-05-2013, 09:49 PM
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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

coors_man_2005's Sig:08 3500 qcsb 6.7 cummins- nv5600 conversion valair clutch, all deletes raised rail pressure, arp head studs and rocker studs, vulcan head gasket & o rings,(thanks lazarsmith) titanium valve springs, chromoly push rods, silver bullet 66/74/14,fas 150 lift pump, afe stage 2 intake, 2000 dodge 1/2 ton Cummins conversion g56 4k.gov springs HD valve springs pump turned up turbo to small
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  #8  
Old 02-14-2013, 09:19 PM
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get a dpf delete and and a 5 inch turbo back man
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