curt1992mj Posted April 28, 2015 Share Posted April 28, 2015 hey dose anyone know if the original exhaust on an Comanche has a catalytic converter? when i bought my jeep it didn't have one and i recently moved to a place where you need a cat if it originally come with one. and i don't like them i never had a cat in my life, and i don't want to have to modify my exhaust again. Link to comment Share on other sites More sharing options...
HOrnbrod Posted April 28, 2015 Share Posted April 28, 2015 All MJs originally came with catalytic converters. AMC started putting them on the original 84 XJs. Link to comment Share on other sites More sharing options...
dj5 Posted April 28, 2015 Share Posted April 28, 2015 I honestly don't know. I bought mine with no cat and looks to be factory or a really good exhaust jobwish I could be more help but figured I would add my input Link to comment Share on other sites More sharing options...
jimoshel Posted April 28, 2015 Share Posted April 28, 2015 Out of 12-13 MJ's Ive been thru, only a couple had CATS. Link to comment Share on other sites More sharing options...
Eagle Posted April 28, 2015 Share Posted April 28, 2015 As Hornbrod has posted, ALL Comanches (and Cherokees) had catalytic converters when they shipped from the factory. Link to comment Share on other sites More sharing options...
Marine1Texas Posted April 29, 2015 Share Posted April 29, 2015 Federal mandate since 1984. all Comanche's had catalytic converter from factory. Look under hood there is sticker. I have a pass thru in my converter because after 25 years in Texas the cat has to look like it is there but no emissions testing. Link to comment Share on other sites More sharing options...
HOrnbrod Posted April 29, 2015 Share Posted April 29, 2015 Actually the EPA mandate came out in 1975. AMC started installing cats on their gasoline vehicles in 1977. Link to comment Share on other sites More sharing options...
Minuit Posted April 29, 2015 Share Posted April 29, 2015 Yep. They all had them from the factory. Link to comment Share on other sites More sharing options...
dasbulliwagen Posted April 29, 2015 Share Posted April 29, 2015 You should have a rectangular flange by the trans cross member. This is where the cat mounted before going into the muffler. If your pipes are in good shape just buy a universal cat or universal high flow cat and have it welded in. No big deal really. Link to comment Share on other sites More sharing options...
Marine1Texas Posted April 29, 2015 Share Posted April 29, 2015 http://www.epa.gov/oms/cert/factshts/catcvrts.pdf Catalytic converters have been installed on most 1975. however The policy August 5, 1986 was when it was enforced. Link to comment Share on other sites More sharing options...
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