PPR stands for "Pulses Per Revolution." (I.e. the number of times the spark
plug sparks each time the engine revolves.)
PPR controls the tachometer readout. If it seems like the tach is displaying a
number either twice or half as fast as actual, then likely the PPR needs to be
adjusted.
Most modern fuel-injected dirt bikes are 1 PPR.
Tach Yellow Indicator Help
When the engine revs above this customizable threshold, Voyager Pro will
send an alert by turning on the yellow indicators.
Use the tumblers to select the RPM yellow alert threshold, then tap Ok to
save the selection.