Otto, do a search on some of the posts I've done regarding smog or emissions or seafoam, I posted a picture on one of the threads of my smog papers when I failed and also when I passed. I think I had either high NOx or HC. Also, the catalytic converter that I got was only $220 installed in southern california. When I took the car in the guy made a comment on it saying that I must've replaced my original cat, because the one I had was half the size, but the cross reference numbers matched up so it was legal in Ca. If you are in or around the Palm Springs/Coachella Valley area, I can refer you to my friend that has the muffler shop for an installation. He is also the same guy that did my dual twin exhausts.

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1990 190E 3.0L