I have a Mazda3i sedan with an aem CAI. I got my oil changed at the dealer Friday and when I got home I checked to make sure they put everything back like it was supposed to be. Well the first thing I noticed that there was a blue sticker under my hood that said "Dealer Approved Modification" and it has some code number and stuff. That made me mad. Well I washed my car yesterday and my girlfriend noticed that there was another one on the inner door where the specs for that car are! Im not sure what they mean, but seems like theyre keeping record of who has what in case you bring it in and decide to take your mod off. Im thinking of just buying some filters and changing the oil myself to avoid them seeing any future mods that I will be doing. Anyone else noticed these stickers??? (boom08)