Stealth 4.0 DigiPedal Throttle Controller – Ford Focus 2013 on
Looking for the best throttle controller for your Ford Focus 2013 on? The Stealth 4.0 DigiPedal throttle controller sharpens pedal response and reduces throttle lag.
This is not just a throttle controller any more. With the tuning wire fitted, the Stealth 4.0 Digipedal adds power (typically 3-5% more) and torque (Nm), and it sharpens your throttle response.
It is calibrated specifically to the Ford Focus 2013 on, not a one-size-fits-all setting.
Typical power gain
| Engine | Typical power gain with the tuning wire |
|---|---|
| 4 cylinder | 4-5 HP |
| 6 cylinder | 5-10 HP |
| 8 cylinder | 10-20 HP |
| Any engine | 3-5% more power |
The power gain needs the tuning wire. Results vary with the vehicle, fuel and its condition.
What does a throttle controller do?
Most modern cars have no throttle cable. When you press the accelerator, a sensor in the pedal sends a signal to the engine computer (ECU), and the ECU decides how far to open the throttle. To meet emissions, fuel economy and safety targets, manufacturers set the ECU to open the throttle slowly and softly. That is the delay or "lag" you feel when you press the pedal.
The Stealth 4.0 Digipedal sits between the pedal and the ECU. It reads the pedal signal and sends the ECU a sharper, more sensitive version of it. The throttle opens sooner for the same pedal movement, so the engine responds faster. On turbo cars it also helps reduce turbo lag. It does not change your ECU or engine, and it can be unplugged and removed at any time.
How it is installed
Plug and play, with no cutting or splicing. With the engine off for at least 10 minutes, unplug the accelerator pedal connector, plug our model-specific harness in between the pedal and the car's plug, then place the control box out of sight and mount the display where you can see it. Instructions are included. See the photos for the install diagram, the harness and the controller fitted in cars.
What it does
- Throttle response: removes the delay of your factory drive-by-wire throttle for crisper acceleration. We have seen 1/8 mile times improve by 0.32 seconds.
- Power and torque (with the tuning wire): the HP tune is calibrated to your vehicle and adds power (HP) and torque (Nm), not just a faster feel.
- Spark advance (with the tuning wire): the tuning wire adds more HP by increasing the spark ignition timing advance. Petrol engines only: diesel and electric vehicles have no spark ignition, so the tuning wire does not apply to them.
Choose your option (drop-down)
- No tuning wire: the controller on its own, for throttle response without the HP tune.
- Add tuning wire (+$100): needed for the HP tune. The wire runs from the controller box into the engine bay and plugs into a model-specific harness, and instructions are included. It is made to order, so lead time can be up to an extra week on some models.
Features
- 13 performance modes, 3 fuel saving modes and 3 anti-abuse modes
- Anti-theft mode (deactivates the accelerator)
- Auto IQ Mode Ver2
- Voltage reader (acts like a voltage gauge)
- Polished aluminium casing with a glass, anti-scratch screen
- Reprogrammable German chip, so it can move to your next car
- Made in Australia using parts from Australia and the USA
Vehicle fitment guide
| Make | Vehicle |
|---|---|
| Ford | Focus 2013 on |
Before you order
- Please message us your year, build date and model (and engine if you know it) when you order. We confirm the harness fits your car before it is sent.
- The tuning wire is made to order, so lead time can be up to an extra week on some models.
Turbo and boosted cars
For boosted cars we also sell the Digitorque controller and the Intellipower.AI controller. They are available in other listings, so message us if you are not sure which suits your car.
Warranty
12 months.
Need it fitted or tuned?
Message us for a quote. We fit and tune at our Dandenong South workshop in Melbourne.

