I live in California which requires a somg check upon vehicle registration. All new vehicles are exempt from smog check up to 4 years after purchase. This means all Z28's purchased in 1998 will require smog check this year. My question, did any of the aftermarket goodies prevent you from passing?

Blaze One
2000 Z28 Pewter A4
!FRA, K&N filter, Mobil 1
http://www.blazeone.cz28.com

 

I'm from NY but I can tell the hard part is the visual. You have to have stock cats at their stock locations unless it's over 50k miles and some other rules are met. Shorty headers with a CARB number is all you can have there before the cats. AIR + ( EGR ) must be present. What I've read on these boards, cams up to 220/220 114 LSA should pass. 112 LSA may be a problem.