Pass Inspection??
If it's roller you won't pass w/out cats
if it's OBDII testing, you will likely pass w/the tuning
If you're in California... you won't pass visual
if your car is really loud... or you have dumps before the rear axle (no exhaust tips) then I would definetly recommend putting cats in for testing though.... granted when I brought mine in they didn't check for cats... but they did look at it funny..... fortuanetly I'm 100% Legal
even had cats on for it


