P3 Gauge - BMW 1 Series E8X
P3 V3 OBD2 Multi-Gauge for BMW 1 Series E81/E82/E87/E88
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SKU: L3P3BE8X

Custom built multi-function digital boost gauge and more for the E81, E82, E87, and E88 generation (2004-2013) BMW 1 Series, including 116i, 118i, 120i, 125i, 130i, 135i, 1 Series M Coupe (1M), 116d, 118d, 120d, and 123d models, as well as all xDrive variants.

Regular price $389.00
Regular price Sale price $389.00
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Form and Function

Every P3 Gauge is built just for your car. It fits perfectly - like it was born there.
Stealthy. Stylish. Smart.

In one sleek display you get real-time access to everything that matters - Boost, Engine Temps, Performance Timers, Code Reading/Clearing, and more. All that from the included diagnostics port connection or optional add-on sensors.

It’s easy to install, simple to use, and made to last.

Every unit is built to order, hand-assembled, and developed entirely in-house... not by a huge corporation but by a small team who loves cars as much as you do.

options and add-ons

Options & Add-ons

Optional OEM Vent Pre-install Service:

We purchase an OEM dashboard air vent from the manufacturer of your vehicle, and pre-install the gauge to save you time and make the install or removal of the gauge be possible in a few minutes.

Requires purchase of a gauge, please allow 1-2 additional days for assembly.

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Adaptors, Tools, and Sensors

Low Profile OBD2 Splitter
SKU: P3OSPLIT
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Ethanol Sensor Voltage Adaptor
SKU: P3ESVA

Looking for a simple way to read ethanol content DIRECTLY from your ethanol sensor?

P3 Gauges has developed a simple device that will allow you to read information directly from your ethanol sensor.

To use with the P3 Gauge, simply select the "EC" (ethanol content) or "FT" (fuel temp) option for one of the two universal analog inputs.

P3 Ethanol Sensor Voltage Adaptor (ESVA)

  • Allows ANY 0-5v linear input gauge to correctly read information directly from Continental/GM style ethanol (FlexFuel) sensor
  • Has two separate outputs (1-ethanol content / 2-fuel temperature)
  • Easy install between ethanol sensor and gauge
  • Taps into signal output of ethanol sensor and wires directly to gauge, 12volt power and ground
  • NOT A WATERPROOF DEVICE / Must be protected from the elements. We recommend locating ESVA with control box of P3 Gauge
  • **Ethanol sensor NOT included**
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Ethanol Content Sensor w/ harness
SKU: P3ESEN

GM/Continental Ethanol Content Sensor

  • Reads ethanol content and fuel temperature
  • Includes harness (approx. 8 inches in length)
  • 50-150hz square wave output
  • Works with the P3 ESVA (Ethanol Sensor Voltage Adapter)
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P3 Analog Boost Sensor (80 psi)
SKU: P3ABS
  • No wiring required, plugs directly into P3 harness
  • 5/32" barbed fitting for boost reference
  • Not affected by tunes or modifications
  • Does not include tubing or boost tap
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Trim Removal Tool Kit
SKU: P3TRIMKIT
  • Durable plastic composite
  • Makes your installation even easier
  • Helps reduce the chance of scratching/scuffing trim and interior components
  • Style and color may vary
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Tubing Kit
SKU: P3TUB
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Custom Hardwire Harness
SKU: P3HWKIT

Hardwire the P3 gauge into the back side of your obd2 port to keep it open.

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LC-2 Digital Wideband O2 Sensor Kit
SKU: P3LC2WB

To use with the P3 Gauge, simply select the "LC" option for one of the two universal analog inputs.

Need to keep an eye on your Air/Fuel Ratio but your vehicle doesn't have a factory wideband? No problem!

The Innovate Motorsports LC-2 wideband kit comes with everything you need to read AFR right on your P3 Gauge.

This is the easiest way to keep an eye on your AFR without adding clutter to your interior. The LC-2 utilizes 100% digital wideband air/fuel ratio technology. With it's patented award-winning DirectDigital™ signal processing technology, the LC-2 can show exactly how rich or lean an engine is running at any load. The LC-2’s self-calibrating circuitry also compensates for changes in temperature, altitude, and sensor condition. The LC-2 includes a digital input/output, 2 full-programmable analog outputs, and is ideal for applications such as dynamometers, data acquisition systems, standalone ECUs, and gauges.

Innovate LC-2 User's Instruction Manual

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0-150 PSI Pressure Sensor (0-5v)
SKU: P3PSEN

Keep an eye on those pressures with our simple analog pressure sensor
5 volt sensor **DO NOT POWER WITH 12 VOLT SOURCE**

To use with the P3 Gauge, simply select the "PS" (pressure sensor) option for one of the two universal analog inputs.

0-150 PSI pressure sensor

  • Adds pressure readout to P3 gauge using analog input
  • Can measure oil, water, or air pressure
  • 10" wiring harness
  • 1/8" NPT fitting
  • Can "T" into oil pressure galley along with factory oil pressure switch

Can be used to monitor

  • Engine oil pressure
  • Air ride pressure
  • Coolant system pressure

Simple 3 wire harness

  • Red - 5 volt power supply (can be sourced from purple wire on P3 harness)
  • Black - Chassis ground
  • Green - Signal output (routed to brown or blue wire on P3 harness)
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VW EA888 Boost Tap
SKU: P3VTAP2
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BMW B48/B58 Boost Tap
SKU: P3BTAP2
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BMW N20/N54/N55 Boost Tap
SKU: P3BTAP1
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VW FSI/TSI/TFSI Boost Tap
SKU: P3VTAP1
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The Details...

Gauge Modes / Readings

We designed the P3 Gauge to read the most important data from your specific vehicle for easy plug and play install. You'll get everything you need with a single OBD port connection to be up and running in minutes. If you wish to add additional sensors, or not use OBD at all, advanced tuners can use analog inputs or even run in "analog only" mode.

OBD Port Data (CANbus input):

  • Boost Pressure
  • Coolant Temp
  • Engine Oil Temp
  • Air/Fuel Ratio (AFR or Lambda)
  • Vehicle Speed (Calibrated or Raw)
  • Intake Air Temp
  • Throttle Angle
  • Ignition Timing
  • Engine RPM (with shiftlight)
  • EGT (Exhaust Gas Temp)
  • Battery Volts
  • Acceration timers (0-60, 0-100, 60-130)
  • Braking timers (60-0, 100-0)
  • Read and clear DTC (Trouble Codes)

Optional Analog Inputs:

Optional but powerful. The analog inputs on the P3 Gauge allow you to use up 3 extra sensors to read data. In addition, it also provides a 4th inpout for auto-dimming display capability.

  • Analog Boost Input
    Use the P3 Analog Boost Sensor to read up to 80psi boost for advanced tuners and cars with aftermarket forced induction kits.
  • 2x Universal 0-5v Inputs
    Two individual 0-5volt universal analog inputs with flexible configuration allows for near infinite possibilities and customization.
  • Dimmer Voltage Detection Input
    Configure the gauge to d.On.A mode and anything over 1 volt tells the gauge to dim, perfect for easy tapping into existing interior lighting.

Supported Vehicles

  • BMW 1 Series 128 135 1M Coupe • E8X (2008-2013)

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.

Your P3 Gauge - Guides and Videos

BMW 1 Series E8X

Configuration & Setup

Car Config Setting (cc.X)
cc.E

Boost Readings: (bSt.X)
bSt.d - Intake MAP Sensor for N55
bSt.E - Charge Pipe MAP Sensor