P3 Cars OBD2 Multi-Gauge V2 Plug & Play Digital Vent Boost Gauge for VW MK4 Golf/GTI/Jetta (1997-2004) | Live OBD2 Data, Reads & Clears Codes | Optional 80psi Sensor

P3 V2 Vent-Integrated Diagnostic Gauge for Volkswagen Golf Mk4, GTI and Jetta 1997-2004

Looking for a stealth, factory-looking performance display for your Golf Mk4 or Jetta/Bora Mk4 that installs without hassle and keeps your cabin tidy? The P3 V2 vent-mounted gauge slots neatly into the dash and connects at the diagnostic port, giving you real-time engine information, turbo pressure and essential performance metrics with a clean OEM-style finish. We run this unit on our own cars and customer feedback has been superb for accuracy, ease of use and the discreet look.

Top reasons enthusiasts choose this vent gauge

• Direct-fit into the dash vent for a stealth, OEM-like appearance with no bulky pods.
• Simple plug-in to the diagnostic socket for a quick, tidy install with no cutting.
• Acts as a performance monitor and fault code reader in one compact display.
• Peak recall lets you review maximum values after a pull or dyno run.
• Reads turbo pressure and vacuum via the diagnostic connection for fast setup.
• Optional external pressure transducer up to 80 psi for true manifold or charge pipe readings.
• Auto-dim and manual brightness control for day and night driving.
• Two auxiliary 0-5 V inputs to add additional sensors to your setup.
• Supplied with the digital display, custom harness and control module for a straightforward install.

Live information at a glance

View key parameters straight from the on-board diagnostics system:

• Coolant temperature
• Intake air temperature
• Exhaust gas temperature*
• Throttle position
• Vehicle speed and engine RPM
• Shift light function
• Battery voltage
• 0-60 mph timer

Plus scan and reset fault codes without a separate tool.

*Note: TDI models do not output EGT over the diagnostic port.

Optional 80 psi analogue boost sensor

• Measures pressure directly from the intake manifold or charge pipe for maximum accuracy on tuned cars.
• Plugs into the included harness for a clean, no-fuss connection.
• Easily added or removed to suit future upgrades.

Tubing kit contents

• Approx. 60 inches of 5/32 inch O.D. plastic tubing
• 5/32 inch O.D. T fitting
• Three sections of 5/32 inch I.D. vacuum hose

Perfect match for the Mk4 platform

Designed for Volkswagen Golf Mk4, GTI and Jetta/Bora from 1997 to 2004, including turbo petrol and VR6 setups. Ideal for daily drivers and track toys alike, this vent-integrated display gives instant visibility of boost, vacuum, temps, RPM, speed, voltage and more, all while keeping your interior looking factory.

Tested by our team and loved by our customers

We have fitted and used this gauge ourselves. It is reliable, quick to install and the live data is invaluable for both performance checks and troubleshooting. Owners consistently praise the sleek appearance, accurate boost readings and the convenience of scanning and clearing trouble codes right from the driver’s seat.

Professional installation

Prefer expert fitting? Book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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