theres an LV mode on Sm that reads 0 with key on (not started )  
if you move the ac selector it will advance to 1 (1-2nd timing) then 2  (3-4th timing) then back to 0  (WOT fueling )
once you see the mode you want turn off the a/c switch , then disconnect the iat sensor by the air cleaner (i rigged a switch to the console) , then put SM in BLM mode and  then by turning  the a/c to on  you can watch the numberon the SM  rise up to 140 then back around , shut off the ac when you get to the number you want , then reconnect the iat sensor and turn off the key , 
if you want to program other perameters just repeat what you did 
now when you turn the key to the on position  the same way you programmed you can reveiw the settings ,just dont unplug the iat