P3 Digital OEM Vent Boost Gauge for BMW E46 3 Series (1998-2006) - Hard-Wired 80 PSI Analog Sensor, Boost/Vacuum, Peak Recall, Battery Voltage

P3 vent-mounted digital pressure display for BMW E46 1998-2006 – the stealth, factory-look solution that drops into the cabin air register and gives instant manifold pressure and vacuum data without cluttering your dashboard. Designed to look OEM, this compact unit blends in perfectly while delivering rapid, reliable readings for daily driving, mapping and track use.

If you are running a turbo or supercharger, or you simply want accurate vacuum and system voltage on a naturally aspirated build, this P3 setup is a brilliant upgrade. We run these on our own cars and customer vehicles and the feedback is consistently outstanding for response, clarity and the seamless finish inside the E46 interior.

Why enthusiasts choose this P3 in-vent display

• Real-time manifold pressure via an integrated 80 psi pressure transducer for precise boost and vacuum monitoring
• Peak hold memory so you can review maximum charge pressure after a pull
• Onboard voltage monitor with quick-check functionality even with the ignition off
• Manual brightness control plus optional auto-dimming for night driving
• Hardwired power and earth for a rock-solid, lag-free signal – configure as constant live or switched live
• Factory-style vent integration for a clean, discreet appearance inside the E46 cabin

What you get in the box

• P3 digital display module for the E46 air vent location
• Power supply unit with built-in 80 psi analog pressure sensor
• Vacuum hose
• Wiring harness and mounting hardware
• Note: a boost reference tap is not included

Fitment and install notes

• Direct wire to power and ground
• Run the supplied vacuum line to a suitable intake or charge pipe reference
• Not an OBD port device – no diagnostic connector required
• Set up as permanent live or switched live to suit your preference
• Vent integration keeps the interior looking stock while adding genuine functionality

Professional fitting

Want it installed properly first time? Book a fitting with MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk

Built to perform, built to blend in

This E46-specific P3 unit gives you the data you need without screaming for attention. Crisp readouts, dependable hardware and a factory-style finish make it ideal for tuned cars and daily drivers alike. Customers love how OEM it looks and how quickly it responds under load.

Common search terms

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