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Old 01-28-2013, 11:59 AM   Thread Starter #1
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Default Performance Exhaust Decreasing Gas Milage

It sounds dumb but after putting on my performance exhaust, I feel like I have noticed a decent amount of decrease in my gas milage. I know that performance exhaust is supposed to increase MPGs but I certainly feel like it has done the opposite. At first I thought just had a heavy foot but after a week of grandpa driving it still feels like im getting worst MPGs. unfortunately I forgot to actually calculate my MPGs before the exhaust so I cant know for sure. Is there any way performance exhaust could decrease MPGs besides a heavy foot?
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Old 01-28-2013, 02:45 PM   #2
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Default Re: Performance Exhaust Decreasing Gas Milage

Probably not, at least not without other symptoms popping up.

What exhaust did you get?
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Old 01-28-2013, 08:51 PM   #3
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Default Re: Performance Exhaust Decreasing Gas Milage

I have the same problem and I have the eBay exhaust I thought maybe I had to drive it for a while but still same problem lived to deal with it
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Old 01-30-2013, 01:46 PM   Thread Starter #4
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Default Re: Performance Exhaust Decreasing Gas Milage

Originally Posted by Chemax View Post
Probably not, at least not without other symptoms popping up.

What exhaust did you get?
I got the Ebay exhaust. Inspecting it, it seemed awesome, and it definitely helped my performance and added about 10-13 horses. But yeah the MPGs have lowered i feel like.

---------- Post added at 10:46 AM ---------- Previous post was at 10:45 AM ----------

Originally Posted by Thtz dope yo View Post
I have the same problem and I have the eBay exhaust I thought maybe I had to drive it for a while but still same problem lived to deal with it
Yeah i got the same exhaust. It definitely added performance though. did it for you as well?
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Old 01-30-2013, 02:33 PM   #5
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Default Re: Performance Exhaust Decreasing Gas Milage

Ya it did add hp you could feel the difference
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Old 01-30-2013, 03:24 PM   #6
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Default Re: Performance Exhaust Decreasing Gas Milage

i don't know why anyone would be surprised by the decrease in mpg. a lot of people say they have maintained the same mpg but i personally have had such shitty mpg since the swap. i do however get a better sounding car which balances it out
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Old 01-30-2013, 03:30 PM   #7
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Default Re: Performance Exhaust Decreasing Gas Milage

Do a reset and see where its at
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