Quote:
Originally Posted by Xist
Aftermarket cats are legal, but they may only last the 2.5 years they are warrantied.
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In states like mine aftermarket cats are no longer legal with an asterisk.
The catalytic converter must meet California's requirements. For a Gen 2 Prius, there is only one catalytic converter being sold that meets those requirements, and that's the OEM cat.
For some vehicles there are aftermarket cats that have gone through everything California demands to prove they meet their requirements, but that's not every vehicle.
So, legally, I can't purchase an aftermarket or used catalytic converter. I can't legally go to another state, have an aftermarket cat installed, and then bring the car back. Legally I either put on a new OEM cat, or I move to a state that allows non-California-compliant cats or I take the engine out and do an EV conversion or I don't drive the car.