Hi, I just finished building the engine for my 37 Chevy coupe. It's an '02 Corvette LS1 with a Comp Cam .613 lift, ITC Billet 102mm intake with an LS2 DBW Throttle body and LS3 Blade style MAF, and open headers. Just got it running with a stock corvette tune in a 0411 PCM. Question is my MAF reading is always 0.0. It's pretty simple, right? +12 volts, ground, and the MAF signal. wires are all ok and the connection to the PCM is good. the signal pin has +5v (from the PCM) when un-plugged and +12v when plugged in. The IAT part of the MAF is working fine. I also tried another MAF and it does the exact same thing (out of my wife's 2012 Camaro). Is there something special I need to do in the programming to make it read? I have an HP tuner (tuned out the VATS, Emissions, etc. Engine starts right up but does not idle at all (needs tuning), but I really need a MAF reading first. thanks for your help. Mike

 

it sounds like it's not wired correctly.

 

Ya, I figured it out. pins on the MAF connector were bent.. Ordered a new connector. It's all good now.

thanks,