Flock Gauge setup· 2013–2018 (Mk3 ST)
How to set up a Flock Gauge in a Ford Focus ST
A Flock Gauge can combine coolant temperature, oil pressure, oil temperature, boost when applicable, and available OBD-II data in one 52mm display. This guide covers general setup options for Ford Focus ST; confirm every fitting, circuit, and threshold against the specific year, engine, and parts installed.
Recommended kit
Analog sensors vs OBD-II
This vehicle supports OBD-II. Connect the Flock OBD-II adapter to read standard channels such as RPM, coolant temperature, vehicle speed, and throttle position. Add wired analog sensors for data the ECU does not provide, commonly oil pressure, oil temperature, or boost. Available PIDs still vary by ECU and calibration.
The gauge can run the OBD-II adapter and wired analog sensors at the same time. Use OBD for available channels, then add a physical sensor for anything the ECU does not expose well, most often oil pressure.
On a Ford Focus ST, that usually means: Oil pressure is usually not available as a useful OBD-II PID. Oil temperature and boost availability also vary, so use wired sensors when a direct measurement is important.
Oil pressure
Use an oil-filter sandwich plate with a 1/8 NPT port for the pressure sensor. Select a plate and center bolt that match the engine's filter thread, confirm seal clearance, and retain the factory pressure warning system.
Oil temp
Use a second 1/8 NPT port in the oil-filter sandwich plate for the oil-temperature sensor. Confirm the probe does not obstruct oil flow and check the plate and filter for leaks after startup.
Boost
For a turbocharged or supercharged setup, connect the boost sensor to an appropriate manifold pressure source using the supplied barb and suitable vacuum hose. Confirm the source and routing for the specific induction system.
Adapters and threads
Flock temperature and pressure sensors use 1/8 NPT threads. Adapter size, hose diameter, oil-filter thread, and available clearance vary by engine; measure and confirm them before ordering.
52mm mount options
Use a universal 52mm A-pillar pod, steering-column pod, vent pod, or surface-mount cup. Choose a location that preserves visibility, does not interfere with airbags or controls, and allows the wiring to be routed without sharp bends.
Power and ground
Use a fused switched 12V circuit that is off with the ignition, and connect ground to a clean chassis point. Verify the circuit with a multimeter and follow the vehicle wiring diagram.
First-boot setup
Connect the 2-pin power lead and the 3-pin sensor harness. Turn the car on, join the Flock Setup Wi‑Fi network, scan the QR code, and pick analog or digital. Full walkthrough.
Starting warning thresholds
Treat warning values as starting points only. Use the engine manufacturer's specifications, the installed sensor range, normal hot-idle readings, and the vehicle's actual operating conditions to set coolant, oil-pressure, oil-temperature, and boost alerts.
Vehicle setup FAQ
Does this vehicle support OBD-II?
Yes. This vehicle supports OBD-II. Available data channels vary by ECU and calibration, and analog sensors can add direct readings such as oil pressure, oil temperature, or boost.
Can I use OBD-II and a real oil pressure sensor together?
Yes. The gauge can use the OBD-II adapter and wired analog sensors at the same time. Use OBD-II for available channels and a sandwich-plate pressure sensor for direct oil pressure.
What 52mm mount should I use?
Use a universal pillar, steering-column, vent, or surface-mount option that does not interfere with visibility, controls, or airbags.
General Flock Gauge FAQ
Does the Flock Gauge work with my car?
Yes. You can use the OBD-II adapter on supported vehicles, install standard analog sensors, or use both at the same time. US-market 1996 and newer vehicles support OBD-II.
Why choose one Flock Gauge instead of several single-sensor gauges?
The Flock Gauge can display up to four sensors on one 52mm screen. You can add or change sensors later without adding another display or cutting another mounting hole.
What can I customize?
You can customize backgrounds, analog needles, colors, layouts, sensor names, display modes, and warning thresholds.
How does the Game Boy Advance adapter work?
The optional adapter loads the Flock display software onto a stock Game Boy Advance through the link cable and sends live gauge data to it.
Does OBD-II support custom PIDs?
Yes. Flock supports standard OBD-II PIDs plus custom manufacturer-specific PIDs. Exact availability depends on the vehicle and ECU.
Will the gauge work with stock sensors?
On an OBD-II vehicle, the adapter can read supported stock ECU data, including coolant temperature on most vehicles. Add wired analog sensors for data the ECU does not provide, commonly oil pressure, oil temperature, or boost.
Build your Flock Gauge setup
Choose the main Flock Gauge and add the OBD-II adapter or analog sensors needed for your setup.
Shop the Flock 52mm Gauge