Originally Posted by RimasRS
I know this because I have other cars like 320d which had both cats primary and secondary I removed secondary because it was clogged (checked) this was suggested by workshop who is dealing with turbo chargers and they say that primary cat burn cleans by heat secondary catching everything else what's left from primary also they say that clogged cats can cause turbo damage.
Believe it or not but that is what I saw heard and I think it is logical
No, I agree it's logical, just looking for instances on this platform....well, the gasoline burning variants. These cars have been around long enough now that somebody would have had to seen this if it is a high probability risk.