I did a emission test before and after installing kittyless DP's. For those who are interested in which way the emission will change with DP's.
First shows catted DP's.
I also tested N/A mode which did result in slightly better values, but is probably because of measuring tolerance.
So do I pass emission sniffer test? Yep I do
But only because in my country, you have to undercut a certain maximum value which is all the same for every car
in the country.
I always thought that each car has to keep its limits given by the manufacturer. I don't know how they check emissions in other countries and states.