all muffler and exhaust questions go here!!!!!!
CF Veteran
Joined: Nov 2011
Posts: 3,603
Likes: 3
From: SLC, Utah
Year: 1999
Model: Cherokee
Engine: 4.0L
CF Veteran
Joined: Nov 2011
Posts: 3,603
Likes: 3
From: SLC, Utah
Year: 1999
Model: Cherokee
Engine: 4.0L
My 94 Z28 had borla with Mac Longtubes and it was treated to a LT1-LT4 conversion and punched to 355ci it sounded evil it was in your face I always got pulled over cause it was too loud, My TJ had a Borla Header with Dynomax Ultra flow, My YJ had a 40 series flowmaster that was replaced with Magnaflow, My 02 Mustang GT had Magnaflow's , MY DD has a Jackson Racing header and Magnaflow, and the XJ has magnaflow.
I like that they slightly louder then stock at idle and dont drone at cruising speeds then when you go wide open they get angry sounding
Last edited by Tom95YJ; Apr 10, 2013 at 11:15 PM.
CF Veteran
Joined: Aug 2011
Posts: 1,994
Likes: 8
From: San Jose
Year: 89
Model: Cherokee
Engine: 4.0 I6
Got an apn header for my rig. had to shave the bottom of the intake near the #6 exhaust tube as well as the #7 bolt hole on the exhaust manifold (in the torque sequence, lower rearmost one). Used a piece of paper as a feeler gauge. Also had an issue torquing some of the bolts because the pipes got in the way. Hopefully it'll be worth the hassle.
CF Veteran
Joined: Dec 2010
Posts: 1,700
Likes: 0
From: S.Jersey
Year: 1999
Model: Cherokee
Engine: 4.0
Magnaflow sounds weak huh ?
My Xj doesn't sound too weak with my Magnaflow
Jeep Cherokee XJ Magnaflow Exhaust - YouTube
Jeep Cherokee XJ Magnaflow Exhaust - YouTube
My Xj doesn't sound too weak with my Magnaflow
Jeep Cherokee XJ Magnaflow Exhaust - YouTube
Jeep Cherokee XJ Magnaflow Exhaust - YouTube
Don't get offended buddy, its just my opinion. I wouldn't have described them as such, if I never heard them. It sounds like a fart can. they get to pitchy when its reved up. but if your happy then cool.
Flows idle is deeper and more hollow.
That "Popcorn" sound that someone said they don't like is whats known as a cam lope idle. I love that sound. A lot of people don't like the drone, but I love it.
I don't think I've ever heard someone say they don't like a cammy sound..


To me thrush,spintech and flows sound the best.
...Just sayin my opinion. you don't have to agree with it. I'm trying to start a pissing match. Buy whatever you want I don't care...Seasoned Member
Joined: Mar 2013
Posts: 258
Likes: 0
From: chi-town il
Year: 98
Model: Cherokee
Engine: 4.0
Yeah, weak.
Don't get offended buddy, its just my opinion. I wouldn't have described them as such, if I never heard them. It sounds like a fart can. they get to pitchy when its reved up. but if your happy then cool.
Flows idle is deeper and more hollow.
That "Popcorn" sound that someone said they don't like is whats known as a cam lope idle. I love that sound. A lot of people don't like the drone, but I love it.
I don't think I've ever heard someone say they don't like a cammy sound..

To me thrush,spintech and flows sound the best.
...Just sayin my opinion. you don't have to agree with it. I'm trying to start a pissing match. Buy whatever you want I don't care...
Don't get offended buddy, its just my opinion. I wouldn't have described them as such, if I never heard them. It sounds like a fart can. they get to pitchy when its reved up. but if your happy then cool.
Flows idle is deeper and more hollow.
That "Popcorn" sound that someone said they don't like is whats known as a cam lope idle. I love that sound. A lot of people don't like the drone, but I love it.
I don't think I've ever heard someone say they don't like a cammy sound..


To me thrush,spintech and flows sound the best.
...Just sayin my opinion. you don't have to agree with it. I'm trying to start a pissing match. Buy whatever you want I don't care...CF Veteran
Joined: Dec 2010
Posts: 1,700
Likes: 0
From: S.Jersey
Year: 1999
Model: Cherokee
Engine: 4.0
CF Veteran
Joined: Jul 2011
Posts: 2,164
Likes: 1
From: Warren, Pa
Year: 97
Model: Cherokee
Engine: 4.0L
Flows or dyno max race bullets
Had 3" race bullets on my 55 Chevy it had a 454 in it .
Car was ok at idle but man when you ragged on it everyone knew it !
Had flows on my 79 Chevy shirt bed pick up they were great .
Been looking at exhaust for my xj I need a muffler for sure and I might as well sling a 2 1/2 tail pipe under it while I'm there .
Had 3" race bullets on my 55 Chevy it had a 454 in it .
Car was ok at idle but man when you ragged on it everyone knew it !
Had flows on my 79 Chevy shirt bed pick up they were great .
Been looking at exhaust for my xj I need a muffler for sure and I might as well sling a 2 1/2 tail pipe under it while I'm there .
Newbie
Joined: Mar 2013
Posts: 26
Likes: 1
From: Grapevine, TX
Year: 1998
Model: Cherokee
Engine: 4.0L
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
I put a MagnaFlow on mine -- even removed a brand new SpinTech to do it, too! The SpinTech was a bit to loud for my tastes. Guess I'm gettin' old.
Video Link: http://www.youtube.com/watch?v=4NPlf8ZJpek
Video Link: http://www.youtube.com/watch?v=ZMemyyrYv5Y


