non jag dealer says he fitted new filters, maf code now on. Going to check them my self, how do i know there a matching pair, can i clean them if so how.

they probobly are not and you would have to talk to k&n on date and batch coding for their filters. AND, even if they were matched how can you keep them flow balanced when theyre oiled? Dont get me wrong I love aftermarket performance filters and have ALL k&n on everything. But none of my cars, trucks, race car/er truck have dual filters and mafs. I would try cleaning your mafs with mafs cleaner as maybe they got dirty from preoil. OR the shop that put them in turned on the ignition when they have the sensors unplugged and set codes and didnt clear them