flowmaster
CF Veteran
Joined: Jan 2010
Posts: 3,379
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From: Forest, VA
Year: 1999
Model: Cherokee
Engine: 4.0 I6
i got the regular 40 and i only like the sound of it on the trail. it sounds kinda weird in regular driving. it's not loud, but i can hear the rumble all the way in my bedroom if i leave it running outside.
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Joined: Jun 2009
Posts: 2,173
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From: Columbus, Ohio
Year: 1997
Model: Cherokee
Engine: 4.0, comp cam, 99 intake, apn header, neon injectors, Thunderbolt 2.5" High Flow Cat
I have the flowmaster Delta Flow 40 and I dunno why anyone says it's loud... it's only mild when if I really get into it.
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Senior Member
Joined: Feb 2010
Posts: 582
Likes: 1
From: Richmond VA
Year: 1996
Model: Cherokee
Engine: 4.0
i got flowmaster on mine...not sure what it is cuz I pulled it off a jeep but mine sounds like it has a cam and it sounds great.It def turns heads when i stick it to the floor and I get complements all the time.
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Joined: Sep 2009
Posts: 1,092
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From: Chesapeake, Virginia
Year: 2002
Model: Grand Cherokee
Engine: 4.7
i have the 40 series and i love it! its got a really good rumble at low rpms and at high rpms it sounds amazing, its not too loud but not quiet, and when its in overdrive cruising at like 70 i cant even hear it
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Joined: Mar 2009
Posts: 633
Likes: 1
From: NW Oregon
Year: 89
Model: Cherokee
Engine: 4.0
full magnaflow setup on my 5.9 and a flowmaster muffler on my XJ.. both brands make a great quality unit for a good price.. specially considering warranty's.. most exhaust shops like these two brands..
But do some research on the Flowmaster with the XJ.. they get hot and there are many cases of the muffler catching the carpet on fire above it... there are a few tricks to stay away from this problem.. but honestly.. I would stick with a magnaflow muffler and Carsound cat (magnaflow hi-flow)
But do some research on the Flowmaster with the XJ.. they get hot and there are many cases of the muffler catching the carpet on fire above it... there are a few tricks to stay away from this problem.. but honestly.. I would stick with a magnaflow muffler and Carsound cat (magnaflow hi-flow)
Hey sorry for the late response
On my Mj I run straight pipe from the manifold back sounds great at idle, on the trail becomes overwhelming, on the highway it's ridiculous. I plan on swapping things around and use a basic thrush turbo muffler. I'm not looking for an aggressive tone on my trail rig. I put this setup on for the Worcester summer nationals.
On my Xj I run a Patriot glass pack. Has a aggressive rumble after it breaks in. At idle it's just hardly noticeable, on the trail it has a good tone to it, but doesn't become to annoying. On the highway it sounds great not to loud not to soft.
Both the Thrush and Patriot mufflers will cost less then half of a Super 40
Edit: A buddy of mine had some issues with the Super 40, and Delta 40. the Super 40 would become extremely hot and at one point melted a peice of rubber on the hanger. The Delta 40..well this is no fault of it's own mostly because of how much of a hack he is fell off on the high way but that's not the mufflers fault.
On my Mj I run straight pipe from the manifold back sounds great at idle, on the trail becomes overwhelming, on the highway it's ridiculous. I plan on swapping things around and use a basic thrush turbo muffler. I'm not looking for an aggressive tone on my trail rig. I put this setup on for the Worcester summer nationals.
On my Xj I run a Patriot glass pack. Has a aggressive rumble after it breaks in. At idle it's just hardly noticeable, on the trail it has a good tone to it, but doesn't become to annoying. On the highway it sounds great not to loud not to soft.
Both the Thrush and Patriot mufflers will cost less then half of a Super 40
Edit: A buddy of mine had some issues with the Super 40, and Delta 40. the Super 40 would become extremely hot and at one point melted a peice of rubber on the hanger. The Delta 40..well this is no fault of it's own mostly because of how much of a hack he is fell off on the high way but that's not the mufflers fault.
Last edited by MjPioneer; Sep 9, 2010 at 01:12 AM.
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