exhaust diameter

688 Views 2 Replies 0 Participants Last post by **DONOTDELETE**, Oct 8, 1999

Discussion Starter · Oct 8, 1999

yj, 4.2L, 390 cfm, clifford headers, no cat

What diameter for the exhaust and a muffler recommendation.

Thank you.

1 - 3 of 3 Posts

Discussion Starter · #2 · Oct 8, 1999

I'd say a 2.5 inch pipe would flow more than enough for that.

Discussion Starter · #3 · Oct 8, 1999

If you go any bigger than that you are going to start affecting your bottom end.

Brad (from the 4 Wheeling center of the universe, 4 corners USA)

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