Mapview; Data Monitor; Eeprom Programming - Holley MPI PRO-JECTION Installation Tuning And Troubleshooting Manual

Fuel injection system

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14.2 Mapview

Once the ECU is connected and the engine is running, Mapview can be selected from the main menu. If the PC is connected

correctly and the ECU is active, the Injection Volume map will be displayed in graphical form.

The displayed graph shows the Injection Volume curve. The X (horizontal) axis of the graph is engine RPM. The Y (vertical)

axis is manifold pressure in kPa. A moving pointer indicates the current operating point of the running engine. As RPM

increases, the pointer will move to the right. As the load increases, the pointer will move towards the top of the graph.

When changes are made to the Injection Volume map, either with the calibration module or EEprom programmer, they are

displayed in Mapview.

Press the "Esc" key to exit from Mapview.

The Data Monitor program requires that the ECU be active and connected to the PC. This program displays the sensor values

and operating parameters in text form.

NOTE:

If your screen displays the following message: "Data Transmission Error!! Trying to fix Error!!" Make sure that the

key has been turned on, the ECU is getting power, and check to make that there is not a loose connection between

the ECU and the PC. This message may display occasionally due to the communication speed difference between

the laptop and the ECU.

This information can be used to troubleshoot the system installation. In the event that the engine temperature, air charge

temperature, manifold pressure, or throttle sensors are faulty or disconnected, the Data Monitor software will display "BAD" next

to the sensor name. If the sensor is operational, the value received by the ECU will be displayed.

The Injection Volume, after Oxy Comp, will be displayed. This is in conjunction with the injector opening duration. Also

displayed is the amount of compensation due to the oxygen sensor feedback signal.

When the Ignition control function is utilized, the Ignition Type and Spark Advance will be displayed.

Calibration module values, if saved, will be displayed across the bottom of the monitor.

Press the "Esc" key to exit Data Monitor.

This package provides extensive adjustability to the operating parameters of the ECU. Again, in order to use this package, the

ECU must be active, and connected to the PC with the ignition key on. Select EEprom Programming. If "EEprom programming"

is chosen, the PC screen should appear like the following:

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