while looking at the main pulley watching the timing mark, slowly open up the clamp until you see the timing jump back about 10 degrees...or put a 1/32" shim between the magnets on the clamp... something about the signal that is going through the wire doubles the idle reading and jumps the timing signal more advanced... this works everytime.
Best run: 1.60 60', 11.319 @ 120.65 mph - 118 octane fuel (on 100 octane tune), 22 degrees of timing, 21-22 psi boost, 11 psi tire pressure (street slicks). "..know your car better... RACE IT!.. AS OFTEN AS POSSIBLE.." "Drag racing is for fast cars... Autocross is for fast drivers... Drifting is for cheap tires..." I made up the last one..