I am trying to adjust the injection timing during cranking for my LBZ duramax. I have used several different values for the 300 & 600 RPM and have yet to note/observe a change from the Virtual Dashboard.

What do I need to do in order to advance injection timing? My understanding is that all you need to do is modify the map, save the changes to a .Tun file, then reflash the ECM. Since there are 5 versions of the main base injection timing, I made each map (A-E) to be the same.

Is there a separate map for cranking? Why isn't it responding to my changes?