MBAdon

Anybody replace their secondary cat with something ilke this? I want to do the secondary cat and resonator delete with H pipe but I don't want to worry about a pesky visual test during smog:

http://www.frozenboost.com/product_i...1f91e6baba5d91

Would this fit and is it the 2.5" one that we would use?

linjy2

that looks tricky indeed! Good thing the law is lax down here.

Mikegpr03

PM me I think I can help you out with some OEM cats I can have gutted and built into my power pipe

MBAdon

So has anyone here done something like this or does everyone just do the cat delete and pray they pass smog?

DiscoZ

Secondary cat removal should not trigger sniffer or readiness AFAIK.

MBAdon

Yes but unfortunately in CA we have a visual inspection that is failed if any part of the factory intake/exhaust system has been modified with non CARB approved parts, of which there are none for the C63 as far as I know.

PaulWdz

As long as you have primary cats you will be fine. Do you honestly think that the people performing the SMOG checks know the exact configuration of every vehicle on the road ?

DuaneC63

That is the problem in Cali and it's getting worse. State is doing sting operations trying to catch smog stations that don't do the visual inspection.

MBAdon

No, but all it takes is one who knows and I'm stuck getting exhaust work done again. That cheap straight pipe that looks like a secondary cat for $40 just seems like there is no down side. I just want to know about fitment and if it will work. It is aluminized steel, is that a problem? Also, would I use the 2.5" tube?