jeepaholic Posted November 12, 2009 Share Posted November 12, 2009 is the pipe on mj exhaust? 2.5"? Link to comment Share on other sites More sharing options...
89eliminator Posted November 12, 2009 Share Posted November 12, 2009 IIRC, its 2 1/4 Link to comment Share on other sites More sharing options...
GATOR88 Posted November 12, 2009 Share Posted November 12, 2009 i went from 2 1/4 to 3 inch and it sounds good Link to comment Share on other sites More sharing options...
1990 Pioneer 4x4 Posted November 12, 2009 Share Posted November 12, 2009 i went from 2 1/4 to 3 inch and it sounds good Any problems with not enough back pressure; backfiring…? Link to comment Share on other sites More sharing options...
Eagle Posted November 12, 2009 Share Posted November 12, 2009 Which pipe, and which engine? The pipe size of the 4.0L has stayed the same, but the pipe size for the 2.5L depends on the year. For the 4.0L, the exhaust pipe (the one from the manifold to the catalytic converter) is 2-1/2", and the tailpipe (from the muffler back) is 2-1/4". On the 2.5L, I don't know what size the exhaust pipe is, but I do know that some years the tailpipe was 2" and other years it was 2-1/4" Link to comment Share on other sites More sharing options...
GATOR88 Posted November 13, 2009 Share Posted November 13, 2009 i have a 4.0 and straight piped it and when i get on it it sounds like a big block real crisp and clear people stair at the eep and wonder whats under the hood but i am just bone stock 4.0 i want to get a header fer it but i am low on money :( :ack: Link to comment Share on other sites More sharing options...
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