BoonDocker YAMAHA YZ-F: YZ450F Box User Manual
Page 6
There are four functions that can be assigned to an auxiliary button. Tst, +HP, TUN, and CAP. To assign a
function to the auxiliary button position the →(cursor) below Btn and use the up down arrow buttons to
toggle to the desired option.
Test (Tst): When set to Tst the auxiliary button can be used to test the auxiliary injectors. With the
engine idling if the auxiliary button is pushed the auxiliary injectors will spray, usually over fueling the
engine and causing the engine to die. Note: (To test injectors individually the opposite injector should be
unplugged while performing test.)
Plus Horse Power (+HP): When set to +HP the auxiliary button can be used to momentarily add a
designated amount of boost. The designated amount of boost can be adjusted in the Boost screen (see
page 8 for more details).
Tune (TUN): When set to TUN the auxiliary button can be used to momentarily add or subtract fuel
through the stock injectors. The amount of fuel added or subtracted is determined by the value set
below FUEL when Btn is set to TUN Tune. Note: The Tune feature can only function when the Xtra fuel
adjustments are not engaged. (Btn must be set to tune to access this adjustment. See page 5 for more
details.)
Capture (CAP): When set to CAP the auxiliary button can be used to capture statistics in the Stats
screens. With the engine running when the auxiliary button is pushed statistics will be captured in the
Stats Cp Screens (see Stats screen on page 7 for more details).
Description: Btn
Test AuxInj:
→ Tst
Description: Btn
Button +HP:
→ +HP
Description: Btn
Fuel only :
→ TUN
Description: Btn
StatCapture:
→ CAP