hello. recently my check engine light came on and i got the codes, p0113 (air intake temp sensor). how much does this sensor cost and is it easy to replace on my own? I have a good general sense about this car too. Also i noticed that my #'s 1 and 6 spark plug wires are relatively loose on the ends attached to the coil pack. the other 4 wires are stuck on pretty tight but those two are so loose. i noticed a lost a ton of power as well after i put in a cold air intake and a cat back exhaust. bottom line is...does the coil pack/spark plug wires need to be replaced because of the loose-ness of the wires? or do i need to re map my ecu since i put those parts on my car? thanks for ur help whoever answers this question