Uknown settings in GT2 tuning?

[MagpieRacer]

I pressed the 2 buttons on the lcd screen bit together (I thought this was how to tune the shifter) and it came up with r51, adjustable from r51 to r55? Any ideA? Tried googling and came up with nothing.

 

[Spagetti69]

Hmm think I came across this the other day.

I had Rsr I think. Anyhow it reset my saved settings.

I too was calibrating a shifter. No harm done though.