gas mileage gone done since...

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generalat2

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Joined
Jun 6, 2015
Posts
40
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Location
phoenix az
Ram Year
2001
Engine
5.9 magnum
I put a new muffler on and since then my gas mileage has gone down. I was at 10mpg and has gone down to 9.5mpg since the new muffler. I don't drive far to work, 8 mile round trip and that's were I drive the truck, and that's it. Rarely on the freeway. Any ideas?
 
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generalat2

generalat2

Member
Joined
Jun 6, 2015
Posts
40
Reaction score
2
Location
phoenix az
Ram Year
2001
Engine
5.9 magnum
It's a knockoff of a flowmaster. Got it from a local shop.
 

Northshoremb

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Mar 15, 2015
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Ram Year
2015
Engine
5.7 Hemi
0.5mpg.........lmao [emoji87]

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