Just picked up a 1989 yj with a 4.2L and a 5-speed trans in it and it just don't have the power that it should.
After diagnostic ... the exhaust system is shot! specifically, the catalytic converter is clogged and the muffler is falling a part
I'm looking to replace everything. including installing a new header. and i'm looking for any tips and/or ideas as far as... what are the good header brands for a Jeep(at decent prices), and would it be better if i went with stainless steal (since i do like driving through water).
And as for the rest of the system, since i live in southern nv., i don't need to deal with smog tests, so the catalytic converter can go. is there a bolt-on kit that will fit my Jeep from the header to tail pipe? or do i have to take 'er to the local muffler shop?
p.s. i had a "flow master" on my 4 runner that i really liked. it sounded great!
and also what about the different sizes, 1 1/2", 2", bigger?