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07-13-2008, 12:49 PM
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eBay Motors
#11 (permalink)
| | Senior Member
Join Date: Jul 2008 Location: Okc,OK
Posts: 118
| The dpf is more than likely the culprit for poor MPG. Not to mention it weighs more than my entire 4" turbo back system.
__________________ "When in doubt,STAND on it!!!"
2007.5 Crew cab dually with LMM and 6 speed, B&W hitch,4"Diamond Eye exhaust,PPE Xcellerator Hot+2 Race, Autometer Sport Comp2 boost and pyro gauges.Transgo Jr. Custom bent tailgate thanks to a lowriding GN trailer! |
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07-14-2008, 09:14 AM
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eBay Motors
#12 (permalink)
| | DuramaxForum Fanatic
Join Date: Apr 2008 Location: Lincoln, NE
Posts: 559
| Dont waste your money on a cold air intake. The LMM's intake is VERY good. As is the stock filter element. don't mess with it and it'll help your engine live long and run strong. The best way to pick up some mpg's is to get rid of the dpf. Its a huge restriction and hampers your mpg's. But you also have to think about how much you like your warranty, cuz you'll lose it if you do the dpf delete. |
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07-14-2008, 03:36 PM
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eBay Motors
#13 (permalink)
| | Member
Join Date: Jun 2008
Posts: 59
| if i were to go with the dpf delete and have to goto the shop could i just put factory exhaust and return the truck back to stock settings and take to the dealer? or is that a complete givaway? |
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07-14-2008, 03:40 PM
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eBay Motors
#14 (permalink)
| | D-Zule Vin-door
Join Date: May 2008 Location: Woodbridge, VA
Posts: 1,192
| Yes, you can replace everything and be just fine.
__________________ FREE SHIPPING!! Orders over $50! Order any MBRP exhaust system, get free next day air!
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07-14-2008, 06:20 PM
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eBay Motors
#15 (permalink)
| | Duramax Forum Moderator
Join Date: Feb 2007 Location: Barnesville OH
Posts: 3,200
| just did a delete on a brand new LMM with the Quadzilla and he also runs the different color fuel(you get what i mean)and he gained roughly 4.5MPG straight across.
__________________ James 
05 LLY Chevy LS E/C L/B DRW my older brothers truck now
2006 LBZ GMC SLE C/C S/B,sold the truck to my dad for a business truck
My Truck now,1987 Chevy 2500 350 tweaked,6" SuperLift,350 V8 bored 60 over,Elderbrock headers Cam and Titanium Rockers,750 Twin Pumped Holley Carb and some other goodies.crank dynos over 400HP. |
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