Originally Posted by Skaterbasist

In states like California, there isn't a single aftermarket turbo system that is legal for the VQ. Cops really like to target modded cars around here. If you get caught, there's a a lot of money that will go down the drain.

In the other hand, most superchargers (including centrifugal SC's) are CARB exempt. That sticker, unfortunately, makes all the difference for us in CA