750 ohm 1/4 watt resistor
 

Does anyone know about how many degrees this baby will retard timing?

Um what car? What year? What engine? What sensor do you plan on putting that in between?

94 LT1 . I think it plugs in to the MAF in the same way the cheap boxes you get off of EBAY, tells it is the temp is hotter rather than colder. I actually don't plan on using it. I was just curious. I have tuner cat and ALDL cables to suit my needs. I might build a resistor box though as a contingency.