LMM Performance Discussion of Chevy and GMC Trucks with LMM Duramax Turbo Diesel Engines Related To Performance And Longevity

LMM mods for mileage

Old Jul 14, 2009 | 02:52 PM
  #11  
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all my friend wants to do is get better mileage. is it or is it not possible to just remove the DPF filter from the exhaust and replace with straight pipe. where is the DPF located? Is it one of those canisters before the muffler?
 
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Old Jul 14, 2009 | 07:59 PM
  #12  
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There should be a thermocouple before and after the DPF
 
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Old Jul 14, 2009 | 08:25 PM
  #13  
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yup I figured it out. I looked today. my idea is possible correct?
 
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Old Jul 14, 2009 | 11:49 PM
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it will throw codes and put the engine in limp mode iirc
 
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Old Jul 15, 2009 | 06:18 AM
  #15  
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not if i get a quad stealth though right?
 
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Old Jul 15, 2009 | 04:58 PM
  #16  
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if it has the dpf delete option the you can do w/e you want
 
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Old Jul 15, 2009 | 07:42 PM
  #17  
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ok thats what I figured.

thx.
 
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Old Jul 16, 2009 | 07:28 AM
  #18  
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Not if you get the stealth like you said. But the DPF pipe itsself is $275, a full exhaust is the less or just varely more if you go with a name brand.
 
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Old Jul 16, 2009 | 09:25 AM
  #19  
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so the stealth doesnt turn off the DPF? It says you can command DPF regen. So I would assume it could turn it off?

Why couldnt I just use a piece of flex pipe for the DPF delete? why do I need a $275 piece? what does that piece consist of that makes it so exspensive?

---AutoMerged DoublePost---

I read quads site and one of the tunes you can download is the DPF delete tune.
 

Last edited by GRI; Jul 16, 2009 at 09:25 AM. Reason: Automerged Doublepost
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Old Jul 16, 2009 | 05:02 PM
  #20  
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might want to use another exhast system for the dpf back... taking it back to the dealer with the factory tail pipe covered with soot might look suspicious
 
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