Flowmaster question!
Thread Starter
Seasoned Member
Joined: Nov 2011
Posts: 448
Likes: 0
From: Falls Church, VA
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Alright so here is my ordeal...
I currently have a Magnaflow hi flow cat, and magnaflow muffler.
But I want louder and more aggressive sound. The only problem is losing exhaust flow, I've heard the Flowmaster does a good job of being restrictive.
What are your guys opinions? Which one is the best performing Flowmaster muffler and aggressive. I know the Super 40, Delta Flow, and Super 44.
I've researched tons of sites and even the flowmaster site but it's all a puzzle to me
I just want to know what the best performing one is with an aggressive sound.
Thanks guys!
I currently have a Magnaflow hi flow cat, and magnaflow muffler.
But I want louder and more aggressive sound. The only problem is losing exhaust flow, I've heard the Flowmaster does a good job of being restrictive.
What are your guys opinions? Which one is the best performing Flowmaster muffler and aggressive. I know the Super 40, Delta Flow, and Super 44.
I've researched tons of sites and even the flowmaster site but it's all a puzzle to me
I just want to know what the best performing one is with an aggressive sound.
Thanks guys!
Thread Starter
Seasoned Member
Joined: Nov 2011
Posts: 448
Likes: 0
From: Falls Church, VA
Year: 2000
Model: Cherokee
Engine: 4.0 I6
Thread Starter
Seasoned Member
Joined: Nov 2011
Posts: 448
Likes: 0
From: Falls Church, VA
Year: 2000
Model: Cherokee
Engine: 4.0 I6
CF ADMIN

Joined: Sep 2010
Posts: 34,088
Likes: 257
From: Lantana, Fl
Year: 1996
Model: Cherokee (XJ)
Engine: 4.Slow
Originally Posted by wifin
Alright so here is my ordeal...
I currently have a Magnaflow hi flow cat, and magnaflow muffler.
But I want louder and more aggressive sound. The only problem is losing exhaust flow, I've heard the Flowmaster does a good job of being restrictive.
What are your guys opinions? Which one is the best performing Flowmaster muffler and aggressive. I know the Super 40, Delta Flow, and Super 44.
I've researched tons of sites and even the flowmaster site but it's all a puzzle to me
I just want to know what the best performing one is with an aggressive sound.
Thanks guys!
I currently have a Magnaflow hi flow cat, and magnaflow muffler.
But I want louder and more aggressive sound. The only problem is losing exhaust flow, I've heard the Flowmaster does a good job of being restrictive.
What are your guys opinions? Which one is the best performing Flowmaster muffler and aggressive. I know the Super 40, Delta Flow, and Super 44.
I've researched tons of sites and even the flowmaster site but it's all a puzzle to me

I just want to know what the best performing one is with an aggressive sound.
Thanks guys!
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Member
Joined: Jun 2011
Posts: 132
Likes: 0
From: North Dakota
Year: 1999
Model: Cherokee
Engine: 4.0L I6 Power Tech
Super 44 on my rig, and while it sounds great at idle and low rpm, it does drone on and on while at lower speeds in town to the point where it sounds "ricey" to me.
Would check into the Super 40 imo.
Would check into the Super 40 imo.
CF Veteran
Joined: Dec 2010
Posts: 1,700
Likes: 0
From: S.Jersey
Year: 1999
Model: Cherokee
Engine: 4.0
i have a walker down pipe with out the pre-cat....which changes the sound completely; i also have a high flow cat and 2.5 fm spr 44. i am 41 yrs old...and i love the low rpm drone in town. everyone looks.lol. at high way speeds above 2400rpm it does get droney again. but at 60-65 its not bad at all. you just have to know that no matter what you do...fm have drone. period.
so if you dont want that;go turbo muffler.
Also fm is the only muffler i have heard on these inlines that dont sound ricey or pitchy at any rpm. its always deep and rumbly. never tiny sounding.
so if you dont want that;go turbo muffler.
Also fm is the only muffler i have heard on these inlines that dont sound ricey or pitchy at any rpm. its always deep and rumbly. never tiny sounding.
Last edited by OEJ; Aug 14, 2012 at 03:24 AM.
Thread Starter
Seasoned Member
Joined: Nov 2011
Posts: 448
Likes: 0
From: Falls Church, VA
Year: 2000
Model: Cherokee
Engine: 4.0 I6
i have a walker down pipe with out the pre-cat....which changes the sound completely; i also have a high flow cat and 2.5 fm spr 44. i am 41 yrs old...and i love the low rpm drone in town. everyone looks.lol. at high way speeds above 2400rpm it does get droney again. but at 60-65 its not bad at all. you just have to know that no matter what you do...fm have drone. period.
so if you dont want that;go turbo muffler.
Also fm is the only muffler i have heard on these inlines that dont sound ricey or pitchy at any rpm. its always deep and rumbly. never tiny sounding.
so if you dont want that;go turbo muffler.
Also fm is the only muffler i have heard on these inlines that dont sound ricey or pitchy at any rpm. its always deep and rumbly. never tiny sounding.
But thanks guys for all the help I really appreciate it. I think I'll go with the Super 40. It seems to be right where I want it.
CF Veteran
Joined: Dec 2010
Posts: 1,700
Likes: 0
From: S.Jersey
Year: 1999
Model: Cherokee
Engine: 4.0
good choice if i had it to do over again, i would go with the spr 40 too. its bigger case makes it have an even deeper tone. So when this muffler goes thats what im getting. Glad we could help.
CF Veteran
Joined: May 2011
Posts: 2,135
Likes: 1
From: Santa Rosa, California
Year: 1987 Comanche,1990
Model: Cherokee
Engine: 4.0L Renix
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Does your state require inspection ? and is muffler required if not a cat and pipe where muffler is can produce a very aggresssive sound and saves money ....jm2cw...



really I wish I went with a Turbo or something lol
Post a vid if you can