P3 Analog Gauge for Audi C5 (1997-2004) — A6, S6, RS6, Allroad
Looking for a reliable Audi C5 boost gauge and performance monitor? The P3 Analog Gauge is a proven choice for Audi A6, S6, RS6 and Allroad models on the C5 platform from 1997 to 2004. It delivers real-time boost and vacuum readings, battery voltage, plus two configurable 0–5V analog inputs for popular performance sensors. Ideal for stock and tuned cars alike, it is a clean, accurate and dependable solution for daily driving, spirited road use and track days.
We’ve installed these gauges for customers and in our own builds, and the feedback is consistently positive: responsive readings, easy configuration and the flexibility to monitor exactly what matters. If you’re searching for an Audi C5 boost gauge, Audi A6 boost gauge, RS6 boost gauge or Allroad boost gauge solution, this P3 Analog Gauge is a top choice.
Main functions and readouts
- Analog boost (yellow/purple/black — dedicated plug for analog boost sensor) *boost tap not included
- Analog input 1 (brown wire — accepts any 0–5V linear output sensor)
- Analog input 2 (blue wire — accepts any 0–5V linear output sensor)
- Battery voltage (read through the red/black power and ground wires)
Optional feature
- Auto-dim (green wire — connect to a circuit that powers on with the headlamps, then enable in the configuration menu for automatic dimming at night)
Why choose this gauge for your Audi C5?
- Designed for the Audi C5 platform (1997–2004) — A6, S6, RS6, Allroad
- Accurate boost and vacuum monitoring — perfect for turbocharged setups and tuning verification
- Two 0–5V analog inputs — integrate popular sensors such as wideband lambda/AFR, oil pressure, fuel pressure, coolant temperature or ethanol content converters
- Clear battery voltage display — keep an eye on electrical health
- Night-friendly auto-dimming — easy on the eyes for daily use
Installation notes
This gauge is not plug and play. A boost/vacuum hose to the engine is required, and wiring must be completed for power, ground and any optional analog inputs. A boost tap is not included.
Prefer professional fitting? Nforcd offers installation in Warwickshire. Request a quote: Sales@nforcd.com
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Upgrade your Audi C5 with a high-quality P3 Analog Gauge and monitor boost, vacuum, voltage and more with confidence. Order now and enjoy proven reliability, flexible sensor integration and the data you need for safer, faster, more consistent performance.