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GM 3 Bar MAP Sensor
GM 3 Bar MAP Sensor
GM 3 Bar MAP Sensor
GM 3 Bar MAP Sensor
GM 3 Bar Map Sensor Wiring Pinout

GM 3 Bar MAP Sensor

5 out of 5 based on 1 customer rating
(1 customer review)

$77.99$89.99

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Description

This GM 3-Bar MAP Sensor allows you to monitor up to 29 psi of boost pressure, making it an excellent choice for boosted applications. It offers accuracy and reliability, and it is frequently used with MegaSquirt ECUs, particularly in turbocharged or supercharged vehicles.

Features:

  • Measures pressure from 1 Bar to 3 Bar (absolute)
  • Reliable sensor for forced induction applications
  • Ideal for use with MegaSquirt and other aftermarket ECUs
  • Fits most GM vehicles equipped with 3-Bar MAP sensors

Specifications:

  • Pressure Range: 1 Bar to 3 Bar (14.7 psi to 29 psi boost)
  • Connector: 3-pin weatherproof connector
  • Input Voltage: 5V
  • Output Voltage: 0.1V to 4.9V (linear output)

Wiring:

  • Pin A: Sensor Ground
  • Pin B: Output Signal to ECU
  • Pin C: 5V Vref

GM 3 Bar Map Sensor Wiring Pinout

 

Calibration:

  • Calibration Type: linear
  • 0V = 1.1 kPa
  • 5V = 315.5 kPa

TunerStudio Setup

  • Location: Tools> Calibrate MAP/Baro
  • Steps:
    • Common MAP Sensors: GM 3-Bar / MPXH6300
    • Click ‘Burn’ to save calibraion to the MegaSquirt ECU

GM 3 Bar MAP Sensor Calibration with MegaSquirt or MS3Pro

 

Included in Box:

  • GM 3-Bar MAP Sensor
  • Depends on option chosen:
    • Connector & Pins
    • 6″ Pigtail

Made in USA

Our USA-assembled MAP sensor uses a universal keying that is compatible with pigtails for 1, 2, and 3 bar MAP sensors. Older sensors required a specific keying to match the connector you were using. This sensor works with any wiring connector keying variant.  Unlike the current Delphi production, this sensor is assembled in the USA. We strive to use USA-sourced parts whenever possible!

We’ve tested the cheap foreign-made knock-offs, and customers often come to us for a replacement after experiencing a failure with those. The generic knock-offs tend to literally fall apart, leaving you stranded. In our experience, these USA-assembled parts have had zero such issues.

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1 review for GM 3 Bar MAP Sensor

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What is in the box?

  • (1) 3-bar MAP sensor

How much boost will it read in PSI?

  • This sensor will read up to 29 psi of boost at sea level.

What is the calibration info I’ll need for this sensor?

  • Calibration is linear with 1.1 kPa at 0 volts and 315.5 kPa at 5 volts.
  • You can simply choose ‘GM 3-Bar’ sensor in TunerStudio to calibrate any of our ECU’s to this sensor.

Where is this product manufactured?

  • This product is made in the USA.

Does this sensor come with a plug or pigtail?

  • The plug is available separately as a connector or pre-crimped pigtail.

How does this product compare to a genuine GM / Delphi MAP sensor?

  • We used to sell genuine Delphi sensors until they moved production to China and began delivering an unacceptably high initial defect rate. The last batches we sold had 1% or 2% delivered with incorrect calibration.  These USA-assembled sensors deliver excellent accuracy and reliability.

Can I use this on a naturally aspirated motor?

  • Yes, it delivers enough resolution below 1 bar to run a naturally aspirated motor with no difficulty.

Questions & Answers

    How do I wire this to my MS3X ? I see the Ext Map signal wire what about the red wire on GM plug?
  1. 0 votes
    Q How do I wire this to my MS3X ? I see the Ext Map signal wire what about the red wire on GM plug?
    Asked by Gary Pheng
    A

    Connect it as follows.

    1. Pin A - Sensor ground on main board.
    2. Pin B - EXT MAP on MS3X.
    3. Pin C - VREF (pin 26) on main board.
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