For 3000GT VR4 owners looking to enhance their engine’s performance monitoring, upgrading the Manifold Absolute Pressure (MAP) sensor is a popular modification. The factory-equipped MAP sensor in OBD2 3000GT VR4 models, typically a 1-bar sensor located on top of the plenum, serves a basic function: detecting positive pressure to manage purge and EGR valves. However, for those pushing their VR4’s performance limits, a more capable sensor is essential.
One effective upgrade is the EVO X MAP sensor. This 3.25 bar sensor can reliably measure up to 32 psi of boost, offering a significant improvement for tuned engines. Visually, the EVO X sensor is remarkably similar to the stock 3000GT VR4 sensor, making it a straightforward, almost plug-and-play upgrade.
Upon removing the original sensor, you’ll notice a cavity beneath it with a small opening. This design is intended to minimize air turbulence around the sensor, ensuring more precise readings.
Comparing the stock sensor with the EVO X sensor highlights their similar dimensions. The EVO X sensor, often identified by a yellow cap, is designed for higher pressure ranges.
The subtle nature of this upgrade means it often goes unnoticed, maintaining a stock appearance while significantly improving performance data acquisition.
The EVO X MAP sensor, part number 1865A052, is available through Mitsubishi parts suppliers. For those utilizing this sensor and needing to maintain emissions compliance, adjustments to the ECU are necessary. Specifically, when tuning your 3000GT VR4 with an EVO X MAP sensor, updating the EGR MAP Offset table in your ROM is crucial. For V2 Chromed ROMs, configure the EGR MAP Offset table with the following values:
750 84 1000 84 1250 73 1500 65 1750 60 2000 55 2500 48 3000 43 3500 23
These adjustments ensure correct readings and proper engine management with the upgraded sensor.
Furthermore, for accurate data logging with EVOScan, especially vital for performance tuning and diagnostics accessed via your 3000GT VR4’s OBD2 port location, you must adjust the sensor scaling settings within your tuning software. These settings are specifically calibrated for the EVO X MAP sensor.
Remember, these sensor scaling values and EGR table adjustments are exclusively for the EVO X MAP sensor. Compatibility and settings for other aftermarket sensors may vary, and it’s essential to use the correct configuration to ensure accurate readings and maintain engine performance and emissions standards. This upgrade, combined with proper ECU tuning accessed through your 3000GT VR4’s OBD2 port, allows for precise boost monitoring and optimized engine management.
