Thanks to all you guys with the TJ manifold advice!! I got a new custom one online..when I had the old one changed yesterday, the guy saved it to show it to me. I had gotten under and looked and seen a few spider cracks, but don't know how I missed that the entire fat bottom part by the flange was totally broken off! The guy couldn't believe I'd been driving it like that w/no monoxide issues (it smelled, but I had the windows open 24/7). It was kinda loud too :) Anyway, now it seems like a new vehicle..it actually takes less juice to climb hills, etc., and doesn't rev as high. Is this normal? It feels AWESOME..like when it was new. Thanks again guys.
Matt