hello!

[XwChriswX]

Originally Posted by spdonegan

Smog test in CA requires visual and pipe test, as of my last check the Stillen G3 and any form of cat replacement will fail the visual (turkeys, if it passes pipe tests they shouldn't freaking care). The G3 does have 'CARB pending' on it which means Stillen, God bless them, are paying the ridiculous amounts of $ to get it approved. Aftermarket cats/test pipes definitely will NOT pass the CA smog nazi's

This is why you keep your stockers, and right before you go test, you swap the stockers back in, and get tested. Then once you pass, swap them back out.