Mapping is the term for the "jetting" persay. Also the "CDI" control
The computer tells the FI system how much fuel to put in the motor, when, at what RPM, what throttle position, etc.
So when they say the have Moto Mapping, they loaded(with a computer) a different mapping then factory(for example), which would make it perform much better, or to your liking.
Chance Mayfield #171
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