P3 Gauge – Audi Q7 (4L) – 3P3AQ7X
The P3 Gauge offers a straightforward solution for monitoring key performance data in your Q7. With a simple plug-and-play installation via your OBD port, you’ll be up and running in no time. This gauge provides essential information at a glance, making it easier to optimise your driving experience.
Key Features
- OBD Port Data: Access crucial metrics including Boost Pressure, Coolant Temperature, and Vehicle Speed.
- Engine Performance: Monitor parameters like Throttle Angle, Ignition Timing, and Engine RPM.
- Custom Functions: Use analog inputs for additional sensors or operate in “analogue only” mode for advanced tuning.
OBD Data Readout
The P3 Gauge reads various data through the OBD (On-Board Diagnostics) connection, allowing you to monitor:
- Boost Pressure
- Coolant Temperature
- Air/Fuel Ratio (AFR or Lambda)
- Vehicle Speed (Calibrated or Raw)
- Intake Air Temperature
- Throttle Angle
- Ignition Timing
- Engine RPM (with shift light)
- Exhaust Gas Temperature (EGT)
- Battery Volts
- Acceleration and braking timers (0-60, 60-0)
- Read and clear DTC (Diagnostic Trouble Codes)
Optional Analog Inputs
For those wanting to expand functionality, the P3 Gauge includes options for additional sensors:
- Analog Boost Input: Attach the P3 Analogue Boost Sensor to measure boost levels up to 80psi.
- Two Universal 0-5V Inputs: Customise your data readout with two flexible inputs.
- Dimmer Voltage Detection Input: Connect to your interior lighting for automatic display dimming.
Connections and Installation
Connecting the P3 Gauge is simple. The only mandatory connection is to your OBD2 port. Before fully installing, we recommend starting your engine to check all functions. Below are the main harness connections:
| Wire Colour | Connection |
|---|---|
| BROWN | Analog input 1 |
| BLUE | Analog input 2 |
| GREEN | Display dimmer wire |
| YELLOW / BLACK / PURPLE | Analog boost sensor (ABS) connection |
To verify fitment for your specific vehicle, please use the site’s vehicle lookup feature or check the “Vehicle Fitment” tab for full details.


