muffler or no muffler? effect MPG?

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Oct 26, 2010 | 03:39 PM

rtralabama

Thread Starter

CF Veteran

Joined: Aug 2010

Posts: 1,678

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From: Carlisle, PA

Year: 2000

Model: Cherokee

Engine: Inline 6

muffler or no muffler? effect MPG?

does driving without a muffler effect you MPG positively or negatively ?

Oct 26, 2010 | 03:43 PM

krash83

Senior Member

Joined: Apr 2010

Posts: 530

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From: Saginaw, Mi

Year: 99

Model: Cherokee

Engine: 4.0

i'll let ya know in a couple days

Oct 26, 2010 | 03:46 PM

JeepingDan

CF Veteran

Joined: Apr 2009

Posts: 18,786

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From: CT.

Year: 88

Model: Comanche (MJ)

Engine: 4.0 HO

Negative. I noticed a BIG drop in mpg when I had no muffler for a couple days. No back pressure + more air flow = crappy MPG.

Oct 26, 2010 | 03:51 PM

rtralabama

Thread Starter

CF Veteran

Joined: Aug 2010

Posts: 1,678

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From: Carlisle, PA

Year: 2000

Model: Cherokee

Engine: Inline 6

Quote:

Originally Posted by JeepingDan

Negative. I noticed a BIG drop in mpg when I had no muffler for a couple days. No back pressure + more air flow = crappy MPG.

alright im going to put mine back on then lol

Oct 26, 2010 | 04:27 PM

Gatchmo5710

CF Veteran

Joined: Apr 2010

Posts: 2,209

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From: st.george utah

Year: 1996

Model: Cherokee

Engine: l6 4.0

you need back pressure. but not too much

Oct 26, 2010 | 04:38 PM

rtralabama

Thread Starter

CF Veteran

Joined: Aug 2010

Posts: 1,678

Likes: 0

From: Carlisle, PA

Year: 2000

Model: Cherokee

Engine: Inline 6

just finished putting it back on. took 10 minutes lol.

Oct 26, 2010 | 06:46 PM

2Evil4U

Senior Member

Joined: Jun 2010

Posts: 849

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From: Slaughter, LA

Year: 1997

Model: Cherokee

Engine: 4.0L

Anything that will allow more air to go through the motor will require more fuel.

muffler or no muffler? effect MPG?

muffler or no muffler? effect MPG?

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