Flowmaster or straight pipe
CF Veteran
Joined: May 2011
Posts: 6,098
Likes: 250
From: DE
Year: 1988
Model: Cherokee
Engine: I6 4.0
Junior Member
Joined: May 2016
Posts: 81
Likes: 0
From: West-Central Missouri
Year: 1995
Model: Cherokee
Engine: 4.0
there won't be a direct bolt in, figure your pipe size for in and out, and the offset and look up universal. I went 50 series on mine and it's perfect, loud enough but not too loud.... it's a 6 cylinder and I'm getting old.
Junior Member
Joined: May 2016
Posts: 81
Likes: 0
From: West-Central Missouri
Year: 1995
Model: Cherokee
Engine: 4.0
I meant to ask, what size pipe are you looking at running? I want to plug for http://performance-curve.com/jeepkits.aspx
I was very happy with the quality
I was very happy with the quality
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Senior Member
Joined: Mar 2012
Posts: 974
Likes: 14
From: Racine, WI
Year: 1997
Model: Cherokee
Engine: 4.0
I meant to ask, what size pipe are you looking at running? I want to plug for http://performance-curve.com/jeepkits.aspx
I was very happy with the quality
I was very happy with the quality
For a frame of reference when choosing your sound, here is mine. Listen to this kind of stuff with good speakers/headphones. Listening on a cell phone or crappy headphones/ear buds is a waste of time.
304T stainless Thorley header
409S stainless downpipe that a local shop fabbed for me (even has less extreme bends in it than factory for minimal improvements in flow).
409S stainless spun cat almost identical to the linked Thunderbolt (mine is by AP)
409S stainless Flowmaster Super 50 Delta Flow muffler
409S stainless tailpipe fabbed by local shop
The pipe is all compression-bent 2.25".
Last edited by mschi772; Oct 11, 2016 at 05:43 AM.
Caracticus Potts The Mod
Joined: Jul 2009
Posts: 5,298
Likes: 9
From: Hainsville, NJ
Model: Grand Cherokee
You can only get so much "sound" out of a straight six, not really going to get what your looking for with straight pipe in the place of the muffler.......I did put a glasspack on my 96 Cherokee a few years back, because the muffler had a hole in it and I needed to get through inspection.....hardly made a difference..LOL
CF Veteran
Joined: Nov 2011
Posts: 7,387
Likes: 10
From: City of Trees, CA
Year: 93 2 door
Model: Cherokee
Engine: 4.0
I just cut my muffler off and put a turn down tip on then cat. Close enough, practically free, and if you don't like it you can still put the flowmaster on later
Junior Member
Joined: May 2016
Posts: 81
Likes: 0
From: West-Central Missouri
Year: 1995
Model: Cherokee
Engine: 4.0
Unless you've hot-rodded the 4.0 quite a bit or it is a stroker, 2.25" is ideal.
For a frame of reference when choosing your sound, here is mine. Listen to this kind of stuff with good speakers/headphones. Listening on a cell phone or crappy headphones/ear buds is a waste of time.
304T stainless Thorley header
409S stainless downpipe that a local shop fabbed for me (even has less extreme bends in it than factory for minimal improvements in flow).
409S stainless spun cat almost identical to the linked Thunderbolt (mine is by AP)
409S stainless Flowmaster Super 50 Delta Flow muffler
409S stainless tailpipe fabbed by local shop
The pipe is all compression-bent 2.25".
Jeep Cherokee 4.0 with Flowmaster 50 - YouTube
For a frame of reference when choosing your sound, here is mine. Listen to this kind of stuff with good speakers/headphones. Listening on a cell phone or crappy headphones/ear buds is a waste of time.
304T stainless Thorley header
409S stainless downpipe that a local shop fabbed for me (even has less extreme bends in it than factory for minimal improvements in flow).
409S stainless spun cat almost identical to the linked Thunderbolt (mine is by AP)
409S stainless Flowmaster Super 50 Delta Flow muffler
409S stainless tailpipe fabbed by local shop
The pipe is all compression-bent 2.25".
Jeep Cherokee 4.0 with Flowmaster 50 - YouTube
I agree and by no means is my 4.0 a hot rod (
) but I have done all the bolt ons and intend to eventually set it up for a cam in the spring and maybe stroke the first time I have to rebuild the engine. Not as good of quality but something again for reference.Junior Member
Joined: May 2016
Posts: 81
Likes: 0
From: West-Central Missouri
Year: 1995
Model: Cherokee
Engine: 4.0



