BoonDocker YAMAHA YZ-F: YZ450F Box - Manual (Page 5)

The extra (Xtra) screen contains features that can be used to add or subtract fuel when the adjustable
specified parameters for PSI and RPM are met. Auxiliary button parameters can also be adjusted in the
Xtra screen.
Position the → (cursor) next to Xtra and press the SEL button to advance to the extra screen.
The adjusted FUEL value will determine the amount of fuel that will be added or subtracted when the
auxiliary button is pushed if button is set to TUN. Note: (The Btn Tun FUEL value can be set from this
screen only when Btn is set to TUN, otherwise the screen will be advanced to the LO, MD, HI screen to
make FUEL adjustments for the PSI and RPM parameters.) To adjust parameters position the → (cursor)
below the desired parameter, FUEL, PSI or RPM or Btn and press select.
The LO, MD, HI in the Xtra FUEL menu represent throttle position LO being the first third, MD being the
middle third and HI being the last third of the throttle range. Note: (Btn cannot be set to TUN to access
this screen)
The PSI or RPM parameter can be turned on or off using the up and down arrow buttons with the
→(cursor) positioned next to the (OFF/ON) below PSI or RPM.
When the PSI Xtra is ON fuel will be added or subtracted only when the boost pressure is less than the
adjusted value. To adjust the less than PSI value use the up and down arrow buttons with the →(cursor)
next to the PSI adjustable value.
When the RPM Xtra is ON, fuel will be added or subtracted only when engine rpm is between the
minimum and maximum adjusted values. To adjust the RPM minimum and maximum use the up and
down arrow buttons with the →(cursor) next to the Min or Max adjustable value.
Note: (The Xtra PSI feature should always be used in conjunction with the RPM Xtra feature.)
MAIN FUEL Stats
MENU
→ Xtra # 5.0
FUEL PSI RPM Btn
→ 000 OFF OFF Tst
PSI Xtra on if
→ OFF PSI < 4.6
RPM Min Max
OFF← 3900 5950
LO MD HI
→ 000 000 000