Does muffler and intake make worse mpg?

T

tkkim

New member

• Aug 19, 2013

• #1

I did exhaust and intake my 2012jk.

Airaid with dynomax 39522 then my trip show mpg is going down.

Is it normal? Do i need to recalibrate something?

 

Tranquillity

New member

• Aug 19, 2013

• #2

My guess would be higher air flow = higher gas consumption. Is it down by much ?

 

jeeeep

Hooked

• Aug 19, 2013

• #3

all else is exactly the same as it was before the intake/muffler?
sometimes the muffler changes the back pressure and it will affect your mileage, I don't know if there's a calibration change for this or if it adjusts over time.

 

OverlanderJK

Resident Smartass

• Aug 19, 2013

• #4

Because you like the sound and are harder on it. :thumb:

 

MTG

Caught the Bug

• Aug 19, 2013

• #5

OverlanderJK said:

Because you like the sound and are harder on it. :thumb:

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^^^ This. :yup:

 

A

Army_Vet

Banned

• Aug 19, 2013

• #6

OverlanderJK said:

Because you like the sound and are harder on it. :thumb:

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MTG said:

^^^ This. :yup:

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This is what first popped into my head too.

 

jbaskin28

New member

• Aug 20, 2013

• #7

Army_Vet said:

This is what first popped into my head too.

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x4. thats what happened when I put cai/exhaust on my car before the jeep. i would romp on the gas to hear the intake suck in air, and the exhaust push it out. lol, i even road around with no radio and windows down for the first couple weeks.

I'm sure itll happen again when i do it to the jeep in feb/march.

 

DynoMax Exhaust

Member

• Aug 20, 2013

• #8

So my 2013 has 2600 miles on it.
Best MPG was 17.5, I average around 15ISH MPG
I try to stay out of the pedal, but it is hard.
I am on 37's and 5.38's with a K/N and DynoMax exhaust system....