Also '90 TT, always passes. Got designated to "test only" center. 1st shop took one look at EVC lines, dual POP, BOVs, nitrous lines, etc. and said I had to go to a smog referee !! Couldn't take that chance, so I left and had to ask around for a shop that is friendly towards hi-perf. cars....found one and passed fine. Kinda nerve-wracking cuz I don't want to start removing things, hehheh.