all muffler and exhaust questions go here!!!!!!
07-16-2012, 12:33 AM
#1937
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Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
Can someone post their spintech on the 4.0. I want a Flowmaster 40, but don't want to over look anything.
07-16-2012, 01:15 AM
#1938
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Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
Sounds like my dad's cherokee kind of, except he's got a 3 foot cherry bomb. Both are nice sounds
Though, the thing keeping me from getting either is that my dad's jeep sounded like a ricer when I slipped my 4" tip over it... 
07-16-2012, 01:18 AM
#1939
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Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
I found this
jeep 4.0 exhaust spintech sportsman muffler - YouTube
Sounds like my dad's cherokee kind of, except he's got a 3 foot cherry bomb. Both are nice sounds Though, the thing keeping me from getting either is that my dad's jeep sounded like a ricer when I slipped my 4" tip over it...
jeep 4.0 exhaust spintech sportsman muffler - YouTube
Sounds like my dad's cherokee kind of, except he's got a 3 foot cherry bomb. Both are nice sounds
Though, the thing keeping me from getting either is that my dad's jeep sounded like a ricer when I slipped my 4" tip over it... 
07-16-2012, 06:22 AM
#1941
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Year: 2001
Model: Cherokee
Engine: 4.0
Originally Posted by NorCalJeep
Can someone post their spintech on the 4.0. I want a Flowmaster 40, but don't want to over look anything.
07-16-2012, 05:05 PM
#1943
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Location: Kentucky
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Year: 2000
Model: Cherokee
Engine: 4.0
Originally Posted by Crazy Amos
I keep getting the P0420 code and the u2 sensors have been replaced. I'm pretty sure it only throws the code at idle because both times it lights up I am idling.
Other than the o2 sensors, there isn't much else to throw this code other than a bad converter is there?
Other than the o2 sensors, there isn't much else to throw this code other than a bad converter is there?
07-16-2012, 05:57 PM
#1945
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Year: 2000
Model: Cherokee
Engine: 4.0
Yeah, I've googled and googled but i put this out there as a last string of hope, hoping I don't have to pay for new cats.
It has just over 169k on it and the O2 sensors are fairly new.
Everything but those and the muffler look to be original, including the tailpipe.
I've done a couple Seafoams to her so I don't know if that has played a part in it or not.
I've had the CEL come on twice while idling and have cleared the code and it keeps coming back.
I don't know if I should replace just the cat right before the muffler or all of them......
It has just over 169k on it and the O2 sensors are fairly new.
Everything but those and the muffler look to be original, including the tailpipe.
I've done a couple Seafoams to her so I don't know if that has played a part in it or not.
I've had the CEL come on twice while idling and have cleared the code and it keeps coming back.
I don't know if I should replace just the cat right before the muffler or all of them......
07-16-2012, 06:02 PM
#1946
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Year: 1990
Model: Cherokee (XJ)
Engine: Renix 4.0
07-16-2012, 08:17 PM
#1947
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Year: 2001
Model: Cherokee
Engine: 4.0L
hey I got a glass pack and its just getting really annoying... I wanna get a muffler but nor sure what to get. I do want something somewhat deeper but i don't wanna it obnoxiously loud and droning... any suggestions?
07-16-2012, 08:20 PM
#1948
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Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
Flowmaster Super 44=aggressive
Look on Youtube to get an idea