well ever since i put on the stock maf with screen and tuned it i've been getting this code, i've checked all connections, wires, ect. it comes on everytime i drive my truck. After i delete it, it will come back on within a day or less. could this be do to since im running the meth inj, do you guys think by some washerfluid goes down the intake into the maf and gets on it, and the pcm reads the maf is dirty on something