Product Name:  
BOV Kompact EM Universal Series  
BOV Kompact EM Universal Series  
TS-0223-1XXX  
Product Description:  
Product Number:  
Document Version:  
V1.00 Rev A  
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IMPORTANT NOTES ON YOUR BOV  
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Turbosmart accepts no responsibility whatsoever for incorrect installation of this product which is potentially hazardous and can cause serious  
engine damage or personal injury.  
The EM series BOV is designed for use as a factory replacement for a turbocharger that utilises an electronic diverter valve, this valve can be  
used on other applications as long as there is a control signal to actuate the BOV.  
Ensure the engine is cold prior to installation.  
RECOMMENDATIONS  
- Turbosmart recommends that your Blow off valve (BOV) is fitted by an appropriately qualified technician  
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KIT CONTENTS  
Please check that the following items have been provided in your EM Series BOV packaging  
Part  
Description  
Turbosmart EM Series BOV  
2x hose clamps  
Use  
1
2
3
4
Main unit  
Mount BOV to inlet and outlet hoses  
1x Blanking plug*  
Block off second outlet port *(Dual Port Variants only) *  
Turbosmart sticker  
Turbosmart Sticker  
Figure 1 - Kit Contents  
TOOLS REQUIRED  
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Hose clamp screwdriver  
1
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ABOUT YOUR EM SERIES BOV  
Turbosmart has developed a unique “plug and play” diverter valve (or bypass valve) upgrade for your vehicle that is currently equipped  
with an electronic diverter valve. While we have developed this unit to be as simple as possible for you to install, we have not  
compromised on performance. This unit will not leak under elevated boost pressures and will still provide you with rapid response  
ensuring that all the OEM calibration strategies are not interfered with, providing you with maximum boost performance while the  
advanced strategies of the OEM’s are retained.  
The EM series BOV is available in two configurations, Dual Port and Plumb Back. The functionality of the BOV is still the same, there  
is no performance difference between the two units, it is a personal preference if the user wishes to utilise a classic vent to atmosphere  
sound or revert all bypass gasses back into the inlet tract of the turbocharger.  
As the valve is completely controlled by the factory engine control unit, the factory diverter valve is almost silent, due to our  
construction, it is possible that your EM series will be much more audible. By being able to hear the unit actuate, occasionally the  
valve may be opening for a few seconds under the following events such as traction control, cruise control management, rapid  
gearchanges and varying throttle position changes, these are all coded as part of the torque management software in the OEM engine  
control unit, there is no adjustment available over these functions via our product. By hearing these events, it is not abnormal, it is  
completely normal for the EM series BOV to be considered “very active” as it is protecting your turbocharger from surge events or  
bypassing air for torque management purposes.  
Control Signal Plug  
Connect to BOV Control  
circuit  
Electronic Actuator  
Controls when the valve opens,  
and closes based on OEM  
signal  
Vent to Atmosphere Port  
(Only on “Dual Port” Models)  
Vents excess air to  
atmosphere  
Plumb Back Port  
Recirculates excess air to  
turbocharger inlet  
Inlet Port  
Boost pressure from the charge pipe  
enters BOV from this port.  
Flange Mounting Holes (Underneath)  
Mounts BOV in a secure location  
Figure 2 - EM Series BOV Overview  
2
FITTING YOUR EM SERIES BOV  
Identify diverter valve location  
2
Mount your EM Series BOV  
5
The diverter valve will be located on the charge pipe between  
turbo and throttle body, some applications have a hose to mount  
the diverter valve away from the charge pipe linking the plumb  
back hose into the turbocharger inlet pipe.  
Slide hose clamps over inlet and recirculation hoses allowing  
some play between the clamp and the hose, press the BOV  
pressure hose and align BOV outlet with recirculation hose. Slide  
hose over outlet fitting and move hose clamps over the fitting  
close t
If the diverter valve cannot be located, seek assistance from your  
local specialist.  
NOTE!  
It may be required to remove auxiliary components to  
access the diverter valve, ensure you consult your local  
specialist or a service manual for correct disassembly  
procedures.  
Diverter Valve  
Usually black plastic  
construction  
Recirculation hose  
Plumbs back into the  
turbo inlet pipe  
Boost Pressure hose  
Connects to the charge  
pipe between turbo and  
throttle body  
Remove the OEM diverter valve  
3
Remove the electronic plug from the OEM diverter valve and  
unscrew any hose clamps and disconnect any hoses, Remove  
the BOV from any brackets, ensure you do not drop the OEM  
valve as permanent damage may occur to the plastic.  
Once the valve has been mounted, connect the electrical plug  
into the OEM factory plug or into BOV controller and secure the  
wiring safely away from a heat source.  
Congratulations, your EM Series BOV is installed and ready for  
use. Double check all electrical connections and mounting  
screws.  
3
CHANGING THE ELECTRONIC ACTUATOR  
Remove Your EM series BOV  
CAUTION!  
1
Failure to ensure O-rings are seated correctly may lead to  
cutting of an O-Ring and unexpected results from the EM  
series BOV  
Remove the electronic plug from the EM series BOV and  
loosen the hose clamps on the inlet and recirculation hoses.  
Remove the BOV from the vehicles  
Slowly insert the new actuator while turning in a clockwise  
direction to avoid tearing the O-rings  
NOTE!  
Cosmetic engine covers may be required to be removed  
prior to the assembly being visible.  
CAUTION!  
The turbocharger assembly may require the vehicle to be  
raised on a hoist or jacked up and secured using vehicle  
jack stands, ensure your safety is not compromised.  
Remove Electronic Actuator from your EM  
series BOV  
2
Using a 11mm open end wrench in the flat sides of the  
solenoid, undo the actuator in an anti-clockwise direction  
when viewed from the end. Ensure the wrench is placed on  
Tighten the new solenoid into the EM series BOV ensuring the  
wrench is on the metallic portion of the solenoid.  
NOTE!  
Tightening the solenoid on the plastic cover may result in  
unrepairable damage to the solenoid.  
Mount your EM Series BOV  
4
Slide hose clamps over inlet and recirculation hoses allowing  
some play between the clamp and the hose, press the BOV  
pressure hose and align BOV outlet with recirculation hose.  
Slide hose over outlet fitting and move hose clamps over the  
fitting close to the body of the BOV and tighten.  
Ensure the cavity is free from debris using avoiding shifting dirt  
into the passages.  
Install New Electronic Actuator into your  
EM series BOV  
3
Ensure the O-rings on your new actuator are correctly seated  
O-Rings  
4
Once the valve has been mounted, connect the electrical plug  
into the OEM factory plug or into BOV controller and secure  
the wiring safely away from a heat source.  
Congratulations, your EM Series BOV is installed and ready  
for use. Double check all electrical connections and mounting  
screws.  
TROUBLE SHOOTING  
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BOV not actuating - Confirm electrical signal plug is connected appropriately, as the plugs are new, some force may be  
required to click the plug into place.  
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Valve is staying open Confirm the valve has O-rings as they may have been dropped or lost during installation  
Boost pressure loss or lower than before - Confirm the valve has O-rings as they may have been dropped or lost during  
installation  
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Failing the above, submit a technical request to [email protected] with information of your engine configuration and  
photos of installation  
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