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Problems after changing exhaust system

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Old Dec 22, 2006 | 11:53 PM
  #1  
birddogs462's Avatar
birddogs462
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From: Yuma, AZ
Problems after changing exhaust system

I just put a MBRP 4" turbo back system on my 05 truck with the cat delete pip and I lost almost 3 mile to the gallon. I am using a tuner from DP Tuner. I had a 4" cat back system on my truck and was averaging between 17 to 20.2 per gallon before I put the turbo back system on. I am looking for advice before I put the cat back on. Has anybody tried this? and what did you do.
 
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Old Dec 23, 2006 | 03:31 PM
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mjlevi
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I have the MBRP 4" Turbo back, no cat...and I gained a few miles per gallon...I would have to believe it may be the Tuner...or you may be driving it a bit hard to hear your new exhaust sound!!!...
 
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Old Dec 23, 2006 | 04:35 PM
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slowmans
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i have the mbrp 4" cool duals system from the turbo back, but i still have the kitty, didnt notice to much of a change?if anyting maybe a little better mileage? i put it on at about 9500 mile now have almost 17k, no problems...
 
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Old Dec 26, 2006 | 11:37 AM
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Mark at DPPI's Avatar
Mark at DPPI
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From: Tennesee
birddogs462,

The exhaust isn't your problem, most likely it's your right foot and the need to "hear" the nice turbo whistle. Exhaust can only help mpg, not hurt it.

Mark @ DPPI
 
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