Turbosmart BLOW OFF VALVES - Diesel BOV Controller Only – Universal - Manual (Page 2)

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Electrical connection
Connect one wire of the solenoid to a fused (use supplied fuse) ignition activated 12V power source and connect the other wire to the
Solenoid trigger signal (Yellow) on the BOV controller unit. Polarity is not important.
Pressure connection
Port 1: Vent to atmosphere.
Port 2: To pressure nipple of BOV.
Port 3: To pressure source e.g. Intercooler piping (Make sure the pressure source is not shared and that it is from the same part of the
pipe work as the BOV)
THROTTLE POSITION CONNECTION
The BOV controller can be wired to the existing throttle position sensor on your vehicle. Connect the white wire to the signal output wire
from the existing throttle position sensor.
(OPTIONAL) For vehicles without a standard throttle position sensor (such as the 12V Cummins Diesel engine), an external one can be
wired in. The ORANGE AND GREEN must be used to power the external throttle position sensor if one needs to be installed as the
TPS requires a 5V power supply and not a 12V power supply.
SWITCHED INPUT CONNECTION (OPTIONAL)
If your vehicle does not have a standard throttle position sensor and you do not want to install an external throttle position sensor, a
double throw switch can be used to activate the BOV. The switch needs to ground the GREY WIRE ONLY when the accelerator pedal
is pressed in and needs to ground the BROWN WIRE ONLY when the accelerator pedal is released.
ADJUSTING YOUR BOV CONTROLLER
DURATION: The duration is the length of time that the solenoid blocks the pressure signal to the BOV. The longer the duration, the
longer the BOV will not have pressure supplied to the cap, essentially keeping the BOV open. The controller also has an override
function which reactivates the BOV once it detects positive throttle movement, independent of what the duration is set at.
SENSITIVITY: The sensitivity setting determines how the BOV controller reacts to throttle movement. The controller will only activate on
negative changes in throttle. The higher the sensitivity setting, the lower the negative change in throttle movement needs to be before
the solenoid will activate the BOV e.g. a change from 4V to 3.5V will not activate the valve but from 4V to 3V will activate the valve.
(OPTIONAL IF SWITCHED INPUT CONNECTION METHOD IS NOT USED) ENABLE FUNCTION: Grounding the BROWN WIRE
activates the enable function which allows the BOV controller to keep the solenoid activated. Even though the unit is still reading
changes in throttle position, it will not respond to them, not allowing pressure to reach the top of the BOV. The yellow LED will stay on
when this function is activated. This function can be used to limit boost as the BOV will not have any pressure keeping it closed. It can
also be used as an over boost safety feature when connected to another device such as a data logger or ECU which can ground the
wire if a over boost scenario is reached.
(OPTIONAL IF SWITCHED INPUT CONNECTION METHOD IS NOT USED) DISABLE FUNCTION: Grounding the GREY WIRE will
activate the disable function which disables the BOV controller. The BOV controller is still switched on but will not respond to changes in
throttle position, keeping pressure to the top of the BOV, not allowing the BOV open. This can be used when the BOV is not required to
be functional e.g. when using cruise control, the BOV will not actuate on sudden throttle changes cresting hills.
Wire from solenoid
(1) Vent to atmosphere
Supplied 5A fuse
Wire from solenoid:
Connect to Ignition activated
12V Power source via fuse
(3) To pressure source
(2) To pressure
nipple on BOV
Yellow wire from control unit