Wrong wrong wrong
Nitrous oxide emissions are NOT particulates!
Nitrous Oxide is a vapor under ordinary atmospheric conditions.
Normal people know this. In normal areas of the country NOx is gaseous. However, when the nitrous oxides enter California airspace, they become particulate due to some secret formula invented by CARB and the EPA at taxpayer's expense...
My '97 Jetta TDI has 478,000 miles on it...