hangemhigh
Club Member
today i pulled the cats off my 91 notch. i'm thinking i'll get a smog pump eliminator kit for it while everythings off. however, i noticed a vacuum line off the inline by-pass valve leading to the egr valve. i'm curious what the proper procedure is for this mod. also, do you just take the head-to-head pipe right off and plug the ported holes in the head? i know there's a threaded bung for the head that tapped inside too, for mounting accessory brackets. please advise accordingly. thanks. jim.