ignition timing

I believe there is a way to lock it at 15* and put a timing light on it . Do some research
 
yeah I seen that method...so what is the logger stating is there anyway to pull up the chips setting on the logger
 
I have a SD2 chip so I can make adjustments not sure about other chips
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ttt thinking about getting an SD2 chip but want to know what I have first my logger will sometimes show 19* degrees timing advance but floats mostly around 22 23?????
 
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