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FS: 2007-2013 Jeep Wrangler "HALO" Angel Eye KitFlowmaster's Force II Axle-back exhaust system for the 201FS: Wranger BRIGHT License Plate LED! Just $3! Great value

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Unread 06-09-2013, 10:10 AM   #1
Airborn
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1998 ZJ 
 
Join Date: Jul 2011
Location: Horton, Michigan, University of Northwestern Ohio
Posts: 361
Help por favor...lol

Alright kind of a dumb question but is the OE downpipe (pipe between manifold and catalytic converter) on a 4.0l, 2 1/2" or is it 2 1/4 like the rest of the system. I have a cracked manifold, which seems to never happen on these engines , and I am just gonna go ahead and do the 99+ intake, maybe 703 injectors, new exhaust manifold or header, and just run 2 1/2" pipe the whole way.
I tried finding a diagram of the exhaust system but none seem to help me. Any info would be appreciated
Thanks

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1998 Jeep Grand Cherokee Laredo 4.0L : 172,xxx miles, IRO 3.5" F>R lift, IRO Adjustable Control Arms, IRO Adjustable Track Bars, 31" Goodyear Wrangler Authority on Cragar V5's, Pavement Pounder until I get out of college :( ...Built Not Bought #650
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Unread 06-09-2013, 03:58 PM   #2
coralman
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1998 ZJ 
 
Join Date: Jul 2010
Location: florida
Posts: 4,214
Its 2 1/4 at the converter end. The part that attaches to the exhaust manifold is less.
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