With the Key on and intake off. Put the NMU in learning mode and open the throttle body with your hand. You should see a light on the NMU turn on or blink indicating that it has learned. You can verify that it has properly learned by slowly opening the throttle body and listening for the clicking of the solenoids. I found out the hard way that you should stay below 100 shot unless you have supporting mods or $$$ for a new Transmission. You can easily run 100 or 125, but DO NOT get carried away, Its tempting but the Trans wont take it.