There are 2 maps loaded on the chip in the ECU, the 2nd map (slightly better performance) is accessed by cutting a wire (commonly known as the blue wire) this allows the 2nd map to come into play.
The Gen 1 performance is enhanced by changing chips and different parameters that are loaded onto it.
To check you need to look at the wiring going into the ecu , there are two connector blocks , the wire if it has been cut is located on the bottom right of the left hand connector block when viewed from behind the bike.