Frequently Asked Questions
- How hard is it to install a P3 Gauge and how long does it take?
Most installs take 5–30 minutes, depending on your skill level and vehicle.
- How accurate is the P3 Gauge?
It displays real-time data from your ECU. If configured correctly, readings match your vehicle's output. An optional analog sensor can be added for certain data types to ensure maximum accuracy.
- Will modifications or tuning affect my readings?
Standard modifications and ECU reflashes typically do not affect accuracy. Only piggy-back tuning that alters sensor data may require the optional analog sensor.
- Can the P3 Gauge display both English and Metric units?
Yes. You can configure units to English, Metric, or a mix of both, with selections for PSI/inHg, BAR, Celsius, Fahrenheit, MPH and KPH.
- Will installing a P3 Gauge void my vehicle warranty?
No. Using a P3 Gauge is the same as plugging in an OBD2 scan tool. Under the Magnuson-Moss Warranty Act (15 U.S.C. § 2301 et seq.) and Right-to-Repair principles, you have the right to use your own diagnostic tools through the OBD2 port. A manufacturer cannot void or deny warranty coverage just because an aftermarket tool or gauge was connected.
- Do I need extra parts to install a P3 Gauge?
In most vehicles, no additional parts are required. Certain readings that are not provided by the ECU may require our optional analog sensor kit, depending on the data you want to monitor.
- How does the P3 Gauge get data from my cars existing sensors?
It plugs into the OBD2 port and acts as a diagnostics reader. If you want to keep that port free, a hard-wire harness kit is available.
- Will installing it in the vent affect heating or A/C?
The P3 Gauge is engineered to retain airflow through your vent, so heating and A/C performance are not affected. Each gauge is designed for its specific vehicle to ensure vent operation is not compromised.
- Can the P3 Gauge handle extreme temperatures?
Yes. We have torture-tested our gauges from −94 °F to extreme heat well beyond typical in-car conditions, including scenarios hot enough to soften or melt plastics, and they continued to function without failure.