I just purchased a Performance Enhancing Chip off of Ebay for my 2000 ML430 . It is supposed to attach to the Intake Air Temp Sensor (IAT) wires to provide an additional 30+HP. Since the Intake Air Temp Sensor is located in the Mass Air Flow Sensor (MAF), I need some assistance in identifing the Signal & Power wires for the Intake Air Temp Sensor (IAT). My MAF plug is a five wire plug 2 of which are the IAT wires, but which 2? The volt meter reading goes like: 1=nothing 2=5V 3=nothing 4= 12V 5=5V.

Could someone advise or send me a link to a MAF wiring diagram. My E-mail address is ghfromky@bellsouth.net Thank you...GH

 

dont do it,its a ripp off,all you got is a recistor that you could have bought at radio schack for >99cents,

 

Do you know the value for the resistor?

You can try to measure it with your Ohm Meter.