Quote:
Originally Posted by UnknownJinX
Anyway, I have a question: is there anything in MVA regarding catalytic converter? And for people who have gone through a VI, will an aftermarket unit pass or will it have to be stock? Also, do they measure the noise level with a device?
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According to the MVA, all cars must be fitted with the stock (or stock equivalent) catalytic converter. The emissions and exhaust system may not be modified.
According to the VI inspector's handbook, they measure the noise level with a device. And they reject if the noise level is beyond the limit, for the appropriate class.