Resale value effect of aftermarket catalytic converter

Affect the resale value of the car I wouldn't think you're in a gen 3 the Gen 4 is out The Gen 3 is now whatever certainly no one is going to really give a hoot all anybody cares about is that it can get to apparently a California smog check so you get the converter now you get through smog checks one or two or however I don't know how often you do them and then when you're ready to sell the car I don't think the owner's going to go oh well I'm going to knock $1,000 off because you've got an aftermarket cat and yeah a special approved one that cost $1,800 so I'm not sure that his argument holds any water and if somebody wants the car just passing inspection is what's needed not what color the converter is or who it came from.

 

If the cue from auto insurance companies is correct in their actuaries not minding cat theft in the slightest and no auto insurer is lobbying/raising concerns about lack of enforcement against cat theives, then fact you don't have OEM cat is also going to have zero affect on the appraised value of your car unless of course it's many decades from now and you have a mint condition collector's version.