Are high-flow Cats illegal in WA?? If I go and do my emissions check will they make me take them off, will I pass?

 

You will FALE. Anything not placed on the car by the manufacture is illigal in WA

 

YES lol... anything that is modded (not orignal equipment aka aftermarket parts) esp for emission are illegal. But do we always follow the rules NO. Im guilty for it i have a MOD MR2 turbo with alota go fast "stuff" ...soo go for it but thats at ur own risk.