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Exhaust Question

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Old Oct 5, 2010 | 11:51 AM
  #1  
Moparguy45's Avatar
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From: Owosso, MI
Year: 1999
Model: Cherokee
Engine: 4.0
Default Exhaust Question

So my muffler is all rotted out and is in need of replacement but i want to be able to really hear the jeep. would just putting a straight pipe in place of the muffler be ok or would it cause drivability issues or reduce my mpgs?
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Old Oct 5, 2010 | 12:08 PM
  #2  
THENNING's Avatar
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From: PA
Year: 1999
Model: Cherokee
Engine: 4.0 6 cylinder
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i lost a couple mpgs just putting a flowmaster 44 in so id imagine youd lose some with straight pipes but it wouldnt effect the driveability
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Old Oct 5, 2010 | 12:32 PM
  #3  
Metlic53's Avatar
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From: Conroe, Texas
Year: 1997
Model: Cherokee
Engine: I6
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Originally Posted by THENNING
i lost a couple mpgs just putting a flowmaster 44 in so id imagine youd lose some with straight pipes but it wouldnt effect the driveability
You lost MPG's? i put a super 40 and gained.
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Old Oct 5, 2010 | 01:05 PM
  #4  
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From: Warsaw, IN
Year: 2000,1990,1999
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you lost mpg's because after you put the muffler on you drive it harder to hear it! haha
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Old Oct 5, 2010 | 01:19 PM
  #5  
dukie564's Avatar
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From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
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i <3 my super 40
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Old Oct 5, 2010 | 01:22 PM
  #6  
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From: Glen Burnie, MD
Year: 1994
Model: Cherokee
Engine: 4.0 H.O. K&N, Borla headers, custom down pipe, magnaflow hi-flo cat, flowmaster to turn down tip
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Originally Posted by jcwclm
you lost mpg's because after you put the muffler on you drive it harder to hear it! haha
yea same here. if you want it really loud put a cherry bomb on there, but i have a magnaflow cat and flowmaster 2 chamber (like 5 years old) on there and mine sounds great!
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Old Oct 5, 2010 | 01:45 PM
  #7  
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From: Milwaukee, WI
Year: 1987
Engine: Check
Default

A straight pipe would be even louder than a glasspack or similar style muffler.

Not to mention you'll most likely be breaking the noise laws.

But you know your area better than most/all of us. You'd know if the police in your area would care.
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