I'm not sure if the rust is the problem. The advisor said the cat had cracks at the welds and he was puzzled. I asked about the emissions warranty and the foreman OK'd the warranty so i'm getting it done for free.
I had the K&N in for a month or 2 before my MAS went bad. Consesus tells me the K&N's oil was clogging the MAS sensor or the K&N was not cleaning properly so I took it out.
The emissions warranty in Canada is 8 years or 130,000km. I think.
1997 Silver AMG C36
OEM Advantegarde Grille
OEM Clear Corners
W210 Blinking mirrors
Zender Rear Lip Spoiler