- Identify OEM Wastegate Actuator Location
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On the model designation 6th Generation BMW 3 Series (F30/1/4/5) N20 Engine, the Wastegate Actuator valve is located on the underside of the turbo side. 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 Wastegate Actuator. Ensure you consult your local specialist or a service manual for correct disassembly procedures.
Ensure the engine has cooled down to ambient temperature before proceeding.
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- Removing OEM Vacuum Actuator
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The actuator is held onto the car with 3x 10mm bolts on the back of the vacuum canister. These are easily removed and placed back onto the vacuum canister once removed from the car. We also need to undo the clevis arm bolt, an 11mm nut. We need this undone slightly to allow us some compliance in removing it from the car. There are two T30 bolts. This is possibly the easiest way to remove the canister from the car.
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- Removing OEM Vacuum Actuator Clevis
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Once the actuator is undone, we need to remove the R Clip that holds the arm onto the actuator arm. The best way to remove this is to hold the clip with angled pliers. These clips generally want to shoot off and get lost under the car. So, the best suggestion is to push it down and hold the clip as it is removed.
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- Fitting your Turbosmart Vacuum Actuator
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With installation, we would like to match the rod length to the original actuator as closely as possible. Once set, we need to place it into the car. The actuator bolts will need to be set and tightened down. It is very easy to drop the bolts, so ensure the passage from underneath is ready to catch and help install the bolts. We will leave the last rod bolt loose on the clevis. |
- Setting your Turbosmart Vacuum Actuator
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The VIWG requires the actuator to be set at a certain Vacuum pressure. This is defined by the spring, with the Mini we need to set at 6inHg (203mmbar) of vacuum to fully seat the wastegate flap. Once the pressure is achieved, we need to move the nut up to the clevis. Unnecessary preload will limit rod stroke and hamper performance. It needs to be just enough to seat correctly. The bottom port must Vent to atmpsohere in this case.
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With the Valve in place we can connect the actuator to the OEM Vacuum Signal. The hose is attached to a barb fitting to ensure a good seal.
NOTE: The bottom port must be left to vent to atmosphere when used solely as a Vacuum actuator.
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- OPTIONAL Positive Pressure Assistance Plumbing
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The VIWG can be used with Postive Pressure assistance. This is located by the black circle. We can use positive pressure that is controlled by the ECU to assist the vacuum system(Top Port) from not being overcome.
The grub screw must be used in this application to allow for pressure to be maintained in the bottom port.
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- Fitting removed parts required for vIWG install
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With the vIWG being fitted to the car and connected. The parts that have been removed must now be stored safely.
Congratulations, your Turbosmart VIWG is installed and ready for use. Double check all connections and mounting screws. Start your engine and check for leaks.
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