BMW E46 3 Series P3 Multi Gauge (1998-2006) - OEM Vent Digital OBD2 Gauge, Plug-and-Play, Optional 80 PSI Boost Sensor

E46 vent-mounted performance display for BMW 3 Series 1998 to 2006

Transform your E46 cockpit with the P3 vent display, a discreet, dash-integrated performance monitor that looks factory and reads live data from the diagnostic port. This clever air-vent unit gives you real-time engine information, a built-in code reader, and optional direct manifold pressure readings without bulky pillar pods or drilling. It is the cleanest way to add a hidden boost readout, temps, RPM and more to your 3 Series.

Key reasons enthusiasts choose this vent display

• Direct-fit vent unit for a seamless factory appearance inside the E46 cabin.
• Simple plug in to the OBD port with a model-specific wiring loom and control module.
• Reads and clears diagnostic trouble codes to help you fault-find quickly.
• Multiple functions in one compact screen - fewer add-on pods, less clutter.
• Peak recall so you can review maximum values after a drive or track session.
• Auto dim or manual brightness for day and night comfort.
• Two 0 to 5 V analogue inputs for extra sensors and future expansion.
• Supplied with display, vehicle harness and controller - ready to fit.

Live data and performance features

• Coolant temperature
• Intake air temperature
• Exhaust gas temperature
• Throttle position
• Road speed
• Engine RPM with shift light
• Battery voltage
• 0 to 60 mph timer
• Additional parameters available through live on-board diagnostics

80 psi pressure sender and vacuum kit - optional add on

• Measures boost or vacuum directly from the intake or charge pipe for accurate manifold pressure.
• Plugs straight into the supplied harness - no extra wiring run to the cabin.
• Add or remove at any time to suit your build.
• Tubing kit includes approximately 60 inches of 5/32 inch O.D. plastic line, a 5/32 inch O.D. T-piece and three sections of 5/32 inch I.D. vacuum hose.

Pre-installed vent option

Choose the OEM-style louvre option and receive the screen pre-mounted in a matching vent for the perfect fit and finish. It drops into the dashboard location for a truly factory look in your E46 interior.

Set up and units

Quick on-screen configuration lets you choose PSI or BAR, Celsius or Fahrenheit, MPH or KPH, adjust shift-light behaviour and calibrate the optional pressure sender. Tailor it to your road or track setup in minutes.

Installation help is available here: www.p3gauges.com/install

Compatibility notes

For BMW E46 3 Series models from 1998 to 2006. Not suitable for many remapped or Euro-software E46 M3 calibrations. For boosted M3 applications please contact us about the P3 Boost Gauge alternative. Diesel variants are not supported.

Fitting and support

This is a straightforward DIY install using the vehicle diagnostic port and the vent opening. Prefer a professional fitment service for your E46 upgrade? MJ Modifications in Warwickshire can help. Request a fitting quote at info@mjmodifications.co.uk.

Why buy from MJ Modifications

We run this P3 vent display in our own cars and it has been a customer favourite for its reliability, tidy OEM-style presentation and accurate readings. If you want the E46 interior to stay stock-looking while gaining vital data like manifold pressure, temps, RPM, shift light and fault code tools in one neat unit, this is the solution we recommend and trust.

Search terms to help you find the right product

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