Richie is right DO NOT CUT THE WIRE
Here is the official reply from Suzuki
""Disconnecting this wire to increase performance is a common misconception.
If you were to disconnect the gear position (pink) wire on any Suzuki EFI
motorcycle, poor performance and possible engine damage will result.
This rumor started because earlier model carbureated GSX-R1100's used a pink
wire to retard ignition timing in first gear to improve traction. Some
tuners discovered that disconnecting the wire increased engine HP output in
first gear. The motorcycle did produce more engine output with the wire
disconnected, but it became more difficult to accelerate from a stop and
actual acceleration and traction was reduced. But riders liked the "feel" of
increased engine performance.
The Gear Position Switch wire is also colored pink on the GSX1300R Hayabusa,
as it is on previous Suzuki's. Like the TL, this switch provides
transmission gear information to the motorcycle's Electronic Control Module
(ECM).
Some mechanics and consumers have experimented with disconnecting this wire
to improve performance or drivebality (especially during the very early
TL1000S driveablity problems before Suzuki released the improved, revised
ECM).
As the rider selects higher gears, the ECM changes the injector duration,
usually longer, producing a richer mixture to compensate for the additional
air provided by the SRAD ram air system. Without the additional fuel, the
mixture will become lean, performance will deteriorate and engine component
damage is possible.
Since a disconnected gear position wire will make the ECM think the
transmission is in neutral, the injector duration is longer than it might be
in the first couple of gears.
This is why the customer might feel a "seat of the pant" driveablity
improvement".
A mechanic using a Dyno may see different, or improved HP with the wire
disconnected.
BUT, since the dyno is testing a static motorcycle without a pressurized air
box from the ram air system, the results do not indicate real world
performance. A fully operational EFI system on a dyno will indicate lower
peak power as the mixture is slightly rich. Disconnecting the "pink wire"
will lean the mixture to a better level for a non-moving motorcycle.
Once again, leaving the wire disconnected will reduced on-the-road
performance and could lead to engine damage.""