How to Install an Additional Control Unit on the Ford Focus MK4

Learn how to install an additional control unit on the Ford Focus MK4: ADDITIONAL because this way we do not risk invalidating the warranty. You will gain a nice boost at low revs and add about 30 horsepower.

This is the GT2 from Powerking (available at powerking.co.uk) and it can be controlled via Bluetooth. You can monitor acceleration, throttle response, and common rail pressure.

Let's proceed with the installation. Open the oil cap to remove the engine cover, then replace it immediately.

Under the coolant reservoir of the intercooler, you will find the first sensor: it controls the turbocharger. The other is located under the rubber engine cover: it relates to the common rail pressure.

In the video, the YouTuber indicates where to route the last connection, which is for the accelerator pedal. Once inside the car, locate the outlet to connect the accelerator.

Our enthusiast guides you step-by-step through each stage, showing the various connections in all operations. Position the control unit so that it does not obstruct the boot closure and route the wire inside the vehicle.

Connect the wire from the additional control unit to the accelerator. Now check the application for any errors.

Open FordScan; the parameters show no errors. Launch the Powerking GT2 application, which you should have installed by now: set your parameters; if you leave it on green, you will have the manufacturer's settings, if you switch it to blue, you can adjust it to your liking.

If you go to learning mode, all instructions for teaching your vehicle the parameters you have set are available. All that’s left is to take it for a test drive.