Yeah, I'm a little hesitant about removing the smog equiptment that I really need, haha, not to mention the smog guys here in the bay area are really picky about what they will pass, the first time I smoged the z, the guy refused to pass it because I had the msa intake on it.. Go figure, I replaced the giant air cleaner with something lighter and nicer and now my car won't pass smog. I don't know how tight the smog laws are elsewhere but around here they'll fail you for having the wrong muffler on if they could. From what I noticed it's mostly the 70's cars in general that would run better without an egr, as they weren't designed for them and would cause more problems than they solved. The 80's shouldn't have a problem with them, when I was running mine with the egr disconnected and now that I fixed it, I diddnt notice any diffirence. In my opinion I think that removing most smog components on 80's+ cars is pretty much pointless, a buddy of mine wanted to block off his egr in his '86 corolla, I told him it would not do anything, guess what? So he just put it back.