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4.0 glasspack

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Old Apr 14, 2012 | 12:14 PM
  #31  
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From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
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Originally Posted by XJ.89.Limited
Run it for a little, then get a flowmaster or CB extreme like me.
That's the plan.
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Old Apr 14, 2012 | 02:11 PM
  #32  
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From: Nazareth/Pen Argyl, Pennsylvania
Year: 1989
Model: Cherokee
Engine: 4.0L 242ci I6
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Mine sounds good, just make sure you get the right piping for it to compensate for the offset out on the stock muffler. Get a pipe bent in a slight S before you put it all together. Measure it up good too.
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Old Apr 14, 2012 | 02:17 PM
  #33  
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From: Arizona
Year: 2000
Model: Cherokee
Engine: 4.0
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I went to Autozone and picked up a 20.00 Cherrybomb. Sounds good. I like it.
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Old Apr 15, 2012 | 05:54 PM
  #34  
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From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
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basically since there's no glass left, its just a legal straight pipe
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Old Apr 15, 2012 | 07:55 PM
  #35  
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From: Nazareth/Pen Argyl, Pennsylvania
Year: 1989
Model: Cherokee
Engine: 4.0L 242ci I6
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CB Extreme sounds bada** on the jeeps. Look up a video on youtube of one. Theres a red one with duals and another red one with a single out the side. It helps to have a sub with the computer speakers. You hear the low tone better.
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Old May 5, 2012 | 10:29 PM
  #36  
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From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
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I eventually bought a $20 dollar glasspack and I love it. I did lose back pressure but gained a lot more torque. Now is not having as great of pressure going to hurt my valves?
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Old May 6, 2012 | 12:11 PM
  #37  
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From: The Republic of TEXAS
Year: 1998
Model: Cherokee
Engine: 4.0L HO
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Back pressure, or lack of, and valves is just another internet myth.
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Old May 7, 2012 | 04:05 PM
  #38  
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From: Nazareth/Pen Argyl, Pennsylvania
Year: 1989
Model: Cherokee
Engine: 4.0L 242ci I6
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Some back pressure is wanted for the 4.0, but I don't think having a glasspack will hurt it.
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Old May 7, 2012 | 04:40 PM
  #39  
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From: brandenburg ky
Year: 1990
Model: Cherokee
Engine: I6
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i think i have the biggest glasspack i have ever seen mines 30" and its way to quiet for me ill post a pic if any body wants to see
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Old May 7, 2012 | 07:04 PM
  #40  
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From: Russellville, Arkansas
Year: 1991
Model: Cherokee
Engine: 4.0 I-6
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When my stock muffler died, I got the $20 Thrush glasspack from Auto Zone and I like the way it sounds. We do have I6 engines remember. They're not going to sound like a big block 400 like I have in my '76 Power Wagon.
My Thrush has now been through two XJ's and still sounds pretty good, especially for the price.
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Old May 8, 2012 | 07:52 AM
  #41  
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From: Cincinnati
Year: 1998
Model: Cherokee
Engine: 4.0 i6
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honestly, i had a super 44, doesnt sound all that great. sounds like a ricer. i'll stick to the straight pipe.
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Old May 8, 2012 | 08:50 PM
  #42  
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How is the straight pipe for you? What kind of differences between straight pip and stock/flowmaster do you see/feel/hear? I want to go straight back from the cat but its my daily driver...
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Old May 8, 2012 | 09:06 PM
  #43  
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From: brandenburg ky
Year: 1990
Model: Cherokee
Engine: I6
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Originally Posted by Madmike9494
How is the straight pipe for you? What kind of differences between straight pip and stock/flowmaster do you see/feel/hear? I want to go straight back from the cat but its my daily driver...
i thought about this but am afraid of how it will sound
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Old May 8, 2012 | 09:20 PM
  #44  
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From: Frederick, MD
Year: 1989
Model: Cherokee
Engine: 4.0
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A 4.0 straight pipe sounds like a cummins lol.
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Old May 8, 2012 | 09:44 PM
  #45  
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From: brandenburg ky
Year: 1990
Model: Cherokee
Engine: I6
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Originally Posted by my89xj
A 4.0 straight pipe sounds like a cummins lol.
Nice now where is my hack saw I know I put it some where
Now is that with a cat or without
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