I just started the swap for the first time, it's a zc into a dx civic. I'm pulling codes 5,9,14. 5 maf sensor- all 3 wires are getting around 5v, and the 2 at the ecu are getting around 3v. does this mean that the sensor ($155) is bad, or what??? 9- doesn't matter on tb, vehicles... 14 IAC valve- all coolant is in, no air bubbles.. once again ($150) sensor?? it sounds good for about 5-10 seconds then kind of sputters, it is also backfiring. on a carb I would check the timing... but I don't know about this new electronic stuff... anybody know any more tricks, or ideas... all help is appreciated.