Product Name:

BOV Kompact EM Dual Port VR23 - N20

TS-0223-1X50

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 seriousengine damage or personal injury.

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The EM series BOV is designed for use as a factory replacement for a turbocharger that utilises an electronic diverter valve, this

valve can beused on other applications if there is a control signal to actuate the BOV.

Ensure the engine is cold prior to installation.

For Standalone ECU configuration, ensure valve is not energised for indefinite periods of time as this can cause significant life

detriment to theactuation solenoid.

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RECOMMENDATIONS

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Turbosmart recommends that your Blow Off Valve (BOV) is fitted by an appropriately qualified technician

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KIT CONTENTS

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Please check that the following items have been provided in your EM Series BOV packaging

Part

Description

Turbosmart EM Series BOV

Turbosmart Sticker

Use

1

2

3

Main unit

3 x Allen Bolts (M6 Cap Screws)

Allen bolts for mounting Kompact to mount

Figure 1 - Kit Contents

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TOOLS REQUIRED

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5mm hex key

Screw drivers

Pliers

Socket Set

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ABOUT YOUR KOMPACT 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.

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.

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Electronic Actuator

Controls when the valve

opens,and closes based on

OEM signal

Control Signal Plug

Connect to OEM harness

Flange Mounting Holes

Bolt to turbo compressor

cover

Sealing O -Rings

(Underneath) Ensures the

valve does not leak

compressed air.

Plumb Back Orientation Indicator

A flat on the flange, acts as a visual

cue to install the BOV in the correct

position relative to the plumb back

pathway. IF Fitted

Plumb Back Port

(Underneath) Recirculates

excess air to turbocharger

inlet

Figure 2 - EM Series BOV Overview

(Figure for illustration purposes only, actual product may vary slightly

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FITTING YOUR EM SERIES BOV

Identify OEM Diverter valve location

Here the wastegate actuator has been moved up to allow for

access to the OEM Diverter Valve.

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On the model designation 6th Generation BMW 3 Series

F30/1/4/5) N20 Engine the OEM Diverter valve is located on

(

the underside of the side of the turbo. This engine is common in

the BMW fleet and some applications might be slightly different.

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.

Removing OEM Diverter Valve

3

There are three T30 Torx bits holding the diverter valve, there

are two bolts that are located on the back side close to the

block, these are the hardest to remove.

The Clip has a grey tab that must be pulled back allowing the

tab to be pressed down and removed.

The intake has been removed for this photo to show the location

of the BOV, although it is not necessary to remove for installation.

Removing OEM Electronic or Vacuum

Wastegate

2

Removing the OEM Wastegate controllers although can be

different are still held on via the same mount. This has two Torx

45 screws. These are located on the underside of the picture

below. We also need to unclip the connector.

3

Installing Turbosmart BOV.

Refitting OEM Wastegate

4

6

It is helpful to remove the solenoid from the BOV to allow for

ease during fitment, due to the swivel flange. We can move the

BOV around to allow for some help during install, the bolt not

We must now use the two T45 Torx bits to reattach the OEM

wastegate to the car. Again, it is a lot easier to keep the first

screw loose until the second one is attached. Once both in the

wastegate can be torqued correctly.

nd

pictured, located at the bottom should be the 2 bolt to place in.

Lightly taping the bolt to the Allen key allows for the bolt to stay

attached to the tool as it is placed on. Once on, the third bolt

can be placed on. Ensure not to tighten until all three Allen bolts

are on this will make it a lot easier to install.

Finalising your Install

7

It is important to check for leaks and correct operation as well as

listening for compressor surge. This noise is the sound of the

boost pressure air running back into the turbo causing cavitation.

Installing Turbosmart BOV Electrical

5

Connector

Now the car can be taken for a test drive in a safe environment

and listen for the correct operation and that no turbo charger

surge occurs

We the BOV in place and tightned up, we can now refit the

solidond ensuring not to damage O-Rings will refitting. We need

to have the solenoid pointing out allowing for install. We also

need to install the Electrical connector. Ensuring that the

connector seats correctly.

4

CHANGING THE ELECTRONIC ACTUATOR

Remove Your EM series BOV.

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Install New Electronic Actuator into your

EM series BOV.

3

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 vehicle.

Ensure the O-rings on your new actuator are correctly seated

in the grooves before installation. Also take not to damage the

O Rings on burrs/threads during assembly.

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.

O-Rings

Remove Electronic Actuator from your EM

series BOV.

2

Using an 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

the metallic portion of the flats and not on the plastic cover.

CAUTION!

Failure to ensure O-rings are seated correctly may lead to

cutting of an O-Ring and unexpected results from the EM

series BOV.

Slowly insert the new actuator while turning in a clockwise

direction to avoid tearing the O-rings.

Ensure the cavity is free from debris using avoiding shifting dirt

into the passages.

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.

5

TROUBLE SHOOTING

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It is important that any issues are resolved before heavy driving.

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. The car will experience heavy surge if not actuating.

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 tech@turbosmart.com.au with information of your engine

configuration and photos of installation.

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