TR Aftermarket exhaust + CA Smog

I believe CA wants original equipment (cats/precats). I don't think there is even a CARB approved cats if you even wanted to deviate or God forbid, you have a failure in your cats and you need them replaced. So if they perform a visual inspection, and notice that is an aftermarket, they can fail you just because of that - even if the cats are running cleaner.

If you just changed the muffler, I think it will help - but not to the sound that you would like.

The best sound would be free flowing cats/precats + muffler of your choice, but I don't think you will pass smog in CA.

Some more information in the following thread.
http://www.ferrarichat.com/forum/boxers-tr-m/432785-catalytic-converters-512tr-california.html

 

Not true. There are aftermarket cats available but none that are a performance improvement. Precats are not on the list of equipment so no one looks for them unless they are very familiar with TR's. Almost every pre OBD2 Ferrari has CARB approved cats available.

 

The car will pass easily with just main cats and very few inspectors are even aware of the precats. If you put on a Tubi with precat eliminators it works very well, sounds good and passes smog.

 

Hi Brian,

Can you share some of the manufacturers of these aftermarket cats? Looking on the CARB website I did not see any for the testarossa.

https://ssl.arb.ca.gov/PartsSearchTool/CatalystSearchTool.aspx