Mitsubishi Lancer Evolution-IV Installation Manual download pdf (Page 10)

PlugIn Installation Manual10

4 Additional Sensors

VX Plug-In ECUs offer various options for the installation of additional sensors and devices. As a

minimum it is recommended that all ECUs are installed with a Manifold Absolute Pressure (MAP)

sensor and Intake Air Temperature (IAT) sensor. These parts can be purchased if required from your

nearest Vi-PEC dealer.

4.1 MAP Sensor

It is important that the pressure source for a MAP sensor be taken from a stable pressure source after

the throttle body. It is common to 'T' into the fuel pressure regulators pressure signal. Do NOT share

this signal with other devices such as boost gauges or blow off valves.

4.1.1 Mitsubishi Lancer Evolution IV - VIII

The Vi-PEC VX EVO Plug-In ECU supports several options for fitting of a MAP sensor. Any one of the

following options can be used:

The factory MAP sensor - Some models are fitted with a factory MAP sensor, this is wired to AnVolt

1. The correct calibration will need to be determined due to variations in sensors across different

models.

MAP Through AFM – The factory AFM wiring can be used to install a MAP sensor.

Pin 1 is connected to +5V

Pin 3 is connected to AnVolt 2

Pin 4 is connected to +14V

Pin 5 is connected to Signal Ground

Pin 6 is connected to An Temp 2 (Connect IAT sensor here)

MAP Through Expansion Connector - The expansion connector provides power, ground, and analog

channels for the connection of a MAP sensor.

Make sure that the correct An Volt channel has been selected as MAP sensor in Vi-PEC Tuning

Software and a MAP calibration has been performed before attempting to start the vehicle.

4.2 IAT Sensor

It is highly recommended that an IAT sensor be fitted in all applications to provide an input for correction

of fuel and ignition based on the engines air charge temperature.

An IAT sensor should be fitted in the intake system in a location that accurately represents intake

temperature. The most common location is just prior to the throttle body. Installing in the manifold is

not recommended due to heat soak issues. A fast response sensor must be used in all forced induction

applications.

4.2.1 Mitsubishi Lancer Evolution IV - VIII

From factory, models supported by the Vi-PEC VX EVO IV-VIII Plug-In ECU are not fitted with a suitable

IAT sensor. The Vi-PEC VX EVO IV-VIII Plug-In ECU supports several options for fitting of an IAT

sensor. Any one of the following options can be used:

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Mitsubishi Lancer Evolution-IV Installation Manual Page 10