Originally Posted by CobraSpdRH
Yeah but thats just it, when the car is idleing you get the lowest read out, in order to see what you are clamping at you have to have the multimeter on the clamp @WOT which is kinda complicated at the track vs. on the dyno
Put the car to on, pull the map from the manifold
Get an air tank, and SLOWLY! pressureize the map. Pressurize till you see close to 5V, and then adjust the clamp to read what you want to set it at.