DragStuff

So we used our RPM Performance data logger last night. One of the heading in the top section of the default graphing is labeled "RAT". I checked the manual and I can't figure out what it is? Anyone shed any light on it???

Rat=Ratio

I think default is Engine RPM/Driveshaft RPM, if you go to the Graph Setup there is a drop down that lets you choose E/D, D/E, E/S or S/E. S is shaft RPM, the third RPM channel.

Thanks John. I'm sure I should have known that but I couldn't find it anywhere....