Does MPE exhaust affect car mpg?

calbear13 · 11-22-2014, 09:39 PM

I'm not suggesting that it does, but just want to check if there is any way an MPE exhaust or other after market exhaust could reduce the car's fuel efficiency. I've noticed I'm getting lower MPG but 99% it's because I'm driving harder trying to hear the exhaust note

spdy330 · 11-22-2014, 10:09 PM

No it doesn't.

Richbot · 11-23-2014, 03:41 PM

Only to the extent that any ~20lb weight reduction would impact mileage

FogCityM3 · 11-23-2014, 05:02 PM

I noticed no difference before and after.

L4ces · 11-23-2014, 06:13 PM

Quote:

Originally Posted by calbear13

I'm not suggesting that it does, but just want to check if there is any way an MPE exhaust or other after market exhaust could reduce the car's fuel efficiency. I've noticed I'm getting lower MPG but 99% it's because I'm driving harder trying to hear the exhaust note

This^. You may drive harder just to hear the exhaust. One of my deciding factors was to get an exhaust that did not require me to rev up all the time to experience it. Now I do want to rev up to much because it sounds like I ringing it while every one else it putting around passing me!

Finding the right balance is tough I guess.

11-22-2014, 09:39 PM	#1
calbear13 Private First Class 13 Rep 120 Posts Drives: 2013 SSII E92 M3 Join Date: Sep 2014 Location: SF, CA iTrader: (0)	Does MPE exhaust affect car mpg? I'm not suggesting that it does, but just want to check if there is any way an MPE exhaust or other after market exhaust could reduce the car's fuel efficiency. I've noticed I'm getting lower MPG but 99% it's because I'm driving harder trying to hear the exhaust note
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11-22-2014, 10:09 PM	#2
spdy330 Major General 530 Rep 6,149 Posts Drives: 05 Tundra, 15 FIT, 17 CRV Join Date: Dec 2009 Location: Chino Hills, CA iTrader: (163)	No it doesn't. __________________ If you will be purchasing ANY AT&T services online or in store could you mention that you were referred by me? My Employee Referral ID is eo4489. This would be a great help and it costs you nothing, thank you!
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11-23-2014, 03:41 PM	#3
Richbot Major General 2761 Rep 5,482 Posts Drives: Jerez Black E90 Join Date: Sep 2007 Location: STL iTrader: (5)	Only to the extent that any ~20lb weight reduction would impact mileage __________________
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11-23-2014, 05:02 PM	#4
FogCityM3 Colonel 500 Rep 2,400 Posts Drives: M3 (E90) & Porsche GT3 RS Join Date: Feb 2012 Location: San Francisco iTrader: (0)	I noticed no difference before and after.
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