TJ exhaust crack advice

Yes, it will get worse.

Yeah, it will probably get worse. Mine sure did anyway, ended up with cracks in a couple different places even. I procrastinated until I couldn't stand the noise anymore, but probably should have replaced it sooner. As far as installing a new one (I opted for a header instead though), it was pretty straight forward. Bolts didn't break, and I re-used them. Old gasket came right off, so no cleaning. Only 'gotcha' I ran into was that I didn't get the header properly seated over the little manifold stud pegs the first time. Created one heck of a vacuum leak, and the engine would rev WAY high when started (like someone was flooring the gas pedal).

Dave

I had the same problem on my 97. I waited until the crack became hugh. That became a hidden problem. When i put the borla header on, i got check engine light to come on and had 4 error codes. Dont wait. change it now before the computer brain starts to adjusting the fuel/air mixture and other things. Hope this helps you. Got the codes of in about a week. the computer brain need to learn the new settings it was getting.

aXeman

SO....then a question is.... any sort of "flow adjustment" would change the performance...so, maybe dropping the battery cable off and resetting the computer??

Not sure... when I replaced my manifold with a header, it idled a bit high (1000-1100) for about a day until (I assume) the computer reset itself. This was even after the battery had been disconnected during the entire installation process. No check engine light for me though.

Dave

hmm....well, I'm sure the computer 'keeps' memory with power failures. But this was a much suggested way to get it to adjust faster....

Maybe it was faster.... might have taken three days to adjust if my battery hadn't been disconnected hehehehe. :)

Dave