If you own a 2008 Suzuki Hayabusa you likely
selected it because it is the most powerful production bike in the history of
motorcycling. After the initial 1999-2000 Hayabusa, all subsequent year models
were released with a restricted ECU that reduced the power output in top gear
preventing the engine from reaching redline and therefore limiting the top speed.
Of course the aftermarket was quick to develop a way of overcoming this restriction
and life continued as usual for Busa owners. The TRE (Timing Retard Eliminator)
has become a staple among any serious rider looking to de-restrict their Busa.
In 2008 the Busa was released with a huge increase in power but the ECU is there
to crash the party in 6th gear to prevent full power delivery near redline.
The result is the same 186mph top speed as previous models. Of course you could
resort to a TRE as in the past but on the new Busa it is equipped with a digital
gear display, and the use of a TRE results in the gear display indicating a
constant 5th gear.
Luckily an innovative device by BoostbySmith cures both problems. With the new
specially modified gear position sensor the new Hayabusa is completely free
of the previous speed limit and the digital gear display continues to work properly
in gears 1-5 including neutral. Then once you snick 6th gear, the display continues
to read 5th gear. For $109.95
it is clearly the best thing going to get your new Hayabusa up to speed. The
device is also available for the GSX-R1000 as well.
To install the Schnitz Racing GPS device you need to remove the right side faring.
If you are not familiar with removing the new bodywork there are some differences
between this year and previous year models so be careful when you remove the
Next you will need to remove the clutch cover from the right side of the engine
which is held on by a series of perimeter bolts.
Using a socket you can remove the 6 bolts holding the clutch springs then remove
the springs and slide off the outer pressure plate of the clutch. Then remove
all the clutch fiber and metal plates from the clutch basket being careful to
note their position and orientation on the basket.
Now you will need to remove the large 30mm nut holding the clutch basket to
the engine. Notice the nut is staked to the shaft so before trying to remove
the nut it helps if you can reverse the indention of the nut. Then place the
bike in 6th gear and hold down the rear brake while using a large impact wrench
to remove the nut.
After the clutch basket is removed you can now see the GPS sensor bolted to
the inside of the engine case. Simply remove it and replace it with the new
one from Schnitz. Trace the other end of the wire to the left side of the engine
and unplug it and plug in the new sensor. Then reassemble the engine in reverse
of the steps above.
Now the digital gear display still works properly by showing gears 0-5 properly.
Then when you engage 6th gear the display shows 5th and the ECU thinks the bike
is still in 5th gear and therefore does not employ the speed restrictor. Plus
while the bike is in gears 1-5 it is fueled normally.