Quote:
Originally Posted by fufanu180
Does a defi need to be programmed?
CenTex240
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I don't know about the Defi. The AEM takes a reference barometric pressure when the car is turned to the on position. Then stores it while the key is turned to start. If they are wired together it will reset while the ignition is in the start position then try to grab it while the car is running and be way off.
I picked the AEM because it uses the GM 3 bar map that they use in there MAP/IAT conversion kit. I was never impressed with the black box sensor that came with other boost gauges I tried.