for awhile my cel has been on it reads p0100 which is maf related. i had a blow off valve put in over a year ago and until a few months ago there was no problem then the cel came on. i brought it to the dealership and the guy there said its cuz of the bov and i told him it was fine for over a year and he said oo u must of boosted hard one day and it set it off. he also threatened to void the powertrain warranty because of the bov. then the guy at the shop that put it on said its a bad maf sensor not the bov. personally i think the dealership just bsd me cuz like i said it was fine for over a year and its also backfireing a lot which just started when the cel came on and i read that can be caused by a bad maf. any ideas? thanks