I need to my Gen 1 Prius to apss the CA smog test. The engine light has come on with codes P0420 and P0171. Getting the catalytic converter changed will cost between $1500-$2000. DO I have to get one from the dealer? Can I get a much cheaper of Amazon like this one -> I have someone who can install it for me. I am just not sure if there are some regulations that do not allow for this. Thanks.
Bummer. It says that it is approved for CA but when I talked to a muffler guy here he said that I had to buy it from the dealer.
Buy it and schedule a trip to Reno (skiing at Squaw Valley) or casino crap. While you're recreating, have a muffler shop install it. As long as it kills the CEL code, you're golden. Or find a "guy" that will install it in his backyard. Might find a "guy" at the local community college or even at Stanford. I like latino "guys" for automotive work.