all muffler and exhaust questions go here!!!!!!
12-03-2013, 08:37 PM
#3782
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Model: Cherokee
Alright I stripped the threads to an o2 sensor and am driving without one right now and getting 15.5 mpg, if I replace cat with high flow and install new sensor how mich improvement am I looking at?
12-03-2013, 09:38 PM
#3788
Senior Member
Anyone have a Magnaflow Direct fit cat and a Flowmaster Super 44 setup? I am picking up the cat tomorrow and have had the muffler for a while. Just wondering how the sound was.
12-03-2013, 10:42 PM
#3790
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Location: Frederick, MD
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Year: 1989
Model: Cherokee
Engine: 4.0
12-03-2013, 10:46 PM
#3791
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Location: York, PA
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Year: 1998
Model: Cherokee
Engine: 4.0
Getting a good Christmas bonus this year and thinking of getting a full exhaust. What's the dirt cheapest high-flow cat, Flowmaster 40 and piping kit I can get ???? 
12-03-2013, 10:49 PM
#3792
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12-03-2013, 10:51 PM
#3793
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Year: 1989
Model: Cherokee
Engine: 4.0
12-03-2013, 11:19 PM
#3794
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Location: PA
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Year: 1998
Model: Cherokee
Engine: 4.0L I6 Power Tech Engine
It will sound nice, I have a super 44 on mine but I have a performance curve spun cat, and its 2.5". Should still sound sweet
12-04-2013, 09:20 AM
#3795
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Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
If you want to spend all that money on a FM40, PC also has a muffler and tailpipe kit for around $150 shipped. Or, you could get a Thrush welded for $25-40 and have a tailpipe made at a shop and it would be made to clear any suspension mods you might have.
FM+Tailpipe: http://performance-curve.com/84-01ch...ailpipe-1.aspx
Thrush:
Here's my thrush system: