Re: Anybody pass emissions with open loop system?
Without exhaust recirulation, and all the emissions stuff on, I would think that it would be very very hard to pass emissions unless your 258 has like 8 miles on it. MY 258 just barely passed, and I have a brand new carb (the stock one), and all new stock ignition stuff on it, so even with no mods it was still tough, but then again, your engine may be in better shape than mine, its got 135000 on it.
89YJ 4.2 5"lft 33"Firehawk ATX
Damn you, Firestone!! Now I have drag slicks!!