to dual, or not to dual?
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Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Senior Member
Joined: Mar 2010
Posts: 550
Likes: 0
From: upstate NY
Year: 1998
Model: Cherokee
Engine: ???
they sound better on RENIX jeeps more torque..
this is a vid of my old 90 i defy anyone to say that doesnt sound good.
http://www.youtube.com/watch?v=fV7Lrc5Uo3I
and it only broke a few times
this is a vid of my old 90 i defy anyone to say that doesnt sound good.
http://www.youtube.com/watch?v=fV7Lrc5Uo3I
and it only broke a few times

Thread Starter
Junior Member
Joined: Dec 2008
Posts: 90
Likes: 1
From: NC
Year: 1990
Model: Cherokee
Engine: 4.0 sraight six
Well, thanks for the input, I do a lot off of wheeling in mud/deep ruts. Methinks the money might be better suited towards something more practical.
he means like a 3+3 manifold. that means custom fab.
i, personally, think duals should not be on an inline vehicle. it comes out of the manifold as 1 pipe, whats the point of branching it off into two. but i guess if you have the cash, and want the duals look, then go for it. but it wont be beneficial over a single exhaust.
i, personally, think duals should not be on an inline vehicle. it comes out of the manifold as 1 pipe, whats the point of branching it off into two. but i guess if you have the cash, and want the duals look, then go for it. but it wont be beneficial over a single exhaust.
CF Veteran
Joined: Feb 2010
Posts: 2,004
Likes: 40
From: corpus christi, texas
Year: 1999
Model: Cherokee (XJ)
Engine: 4.0 I6
bmw inlines came with dual exhuast so just cause jeeps didn't come like that doesn't mean all inlines came as one log manifold.
all bmw I6 are true dual and are either y'd into a single (the m20b27) or ran duals all the way back (all other bmw I6)
this is an m20b25 bmw motor (2.5l i6)

under car pic showing pipes

exhaust size is dependant on how much exhuast gas you are moving through your engine. if you ahve a small amount going in then not alot is going to exit so no reason to make a large exhaust sytem.
all bmw I6 are true dual and are either y'd into a single (the m20b27) or ran duals all the way back (all other bmw I6)
this is an m20b25 bmw motor (2.5l i6)

under car pic showing pipes

exhaust size is dependant on how much exhuast gas you are moving through your engine. if you ahve a small amount going in then not alot is going to exit so no reason to make a large exhaust sytem.
Last edited by superj; Mar 15, 2010 at 09:07 PM.






