Product Support Page
Last updated 4/16/12
- Once installed,
this shift box is simple to use. Simply press the
up-shift button to advance to the next gear, or press
the down-shift button to drop to a lower gear.
- This shift box
will boot up in 3rd gear every time as a safety in case
the shift box would ever reboot due to a power
- By default the
downshift protection RPM is 4500RPM, see the menu below
to change this, or disable the downshift protection.
- Note that the
shifts are made at full line pressure, so learning the
timing on when to make the shift will make using this
shift box much more pleasurable on the street.
- Note that the
transmission has a delay of 500ms-1000ms for the actual
shift to complete. This will vary some with engine speed
and power level, and transmission adjustments. Be sure
to shift early until you learn how long your
transmission takes to perform the shift at WOT to
prevent a possible over-rev of the engine.
Using the menu:
- To enter the menu, down-shift to
first gear using the down-shift button, then hold the
down-shift button for ~ 5 seconds until you hear a
series of beeps
- The display will display the
downshift protection RPM, "4500" is the default RPM
- To change the value press the
up-shift button... This will advance the increments up
to 7000 in 500RPM increments, after 7000 it will roll
over to "off" to disable the downshift protection.
Continue to advance until your desired RPM is displayed.
- Once you have the desired value;
you can either wait ~ 5 seconds for the menu to exit, or
press the down-shift button to advance to the next menu
- The next menu option will display
whether the audio beeps are on or off. Default is on.
Press the up-shift button to toggle the audio on or off.
Note there is always audio in the menu, and this will
only change normal operation, like when a shift is
blocked because the engine speed is above the set limit,
or when a shift cannot be made because the gear limit is
- Once you have the audio set where
you want it; you can either wait ~5 seconds for the menu
to exit, or press the down-shift button to display the
current firmware version and exit the
- All settings are saved to flash
memory as soon as they are changed automatically
Testing the downshift protection:
- On the bottom side of the shift
box is a yellow/orange LED. This LED does a bulb test
when the shift box is first powered up. See image for
- This LED is used to indicate the
downshift protection is working. When the engine RPM's
are brought up above the set RPM, the LED will turn on.
When the RPM's drop below the set RPM the led will turn
- Note some flicker on this LED is
normal, especially when near the set RPM due to timing
belt flex and noise. If excessive, this may indicate
your cam or crank angle sensor needs to be replaced.
Updating the firmware:
- The most recent Shift Box BASIC
firmware version is 002
- Please send an e-mail to
firstname.lastname@example.org to inquire about updating your
firmware. Please note this shift box does not support
USB firmware updates and will need to be shipped to
Forced Four to be updated.
All settings will be set to factory defaults when
the firmware is updated)
Confused? Contact us at
Check out our tutorial video of this
shift box in action!
Click to open