Motec M48

The M48 is our Engine Management System (ECU) with the ability to provide sequential injection and individual cylinder fuel/ignition trims for up to 8 cylinder engines and is designed to provide you with the power and quality of our Pro series but at lower cost by letting you option in only the features you require. It is designed primarily for performance street cars & bikes but by choosing the optional features it is perfect for competition use.

Our base system uses 3 Dimensional fuel & ignition mapping and ignition control to give you the ability to drive your ignition modules and set your spark timing to be at its absolute best at all points. Sequential ignition lets you fire the injectors at the optimum time in the engine cycle. Advanced tuning is an option which gives many extra features including traction control, the ability to configure the ECU to your existing sensors, etc. Another option is 512Kb of on board data logging to let you analyse the engine as it has been running. Configure the system to suit your needs and enable more options if they are required later.

All M48 models have the accurate control necessary to meet legislated emissions requirements, including closed loop narrow band lambda control. The engine must, of course, be emissions capable.

The M48 can use nearly all the original equipment and aftermarket ignition triggers, modules and coils, giving it unmatched flexibility. This avoids the cost and time needed to re-manufacture the distributor in order to trigger Engine Management Systems (ECUs) which are not as advanced as the MoTeC system. The M48 can be triggered by either a hall effect switch, a logic drive or a magnetic sensor, with various signal types and with intelligent signal filtering insuring proper signal to noise ratio at any crank speed. Electromagnetic interference can play havoc with electronic devices, and MoTeC take extensive preventive measures to reject low impedance conducted interference and to shield from radiated interference.

The heart of the M48 is a Motorola 32 bit microcontroller with a time co-processor, a choice which puts it at the leading edge of automotive control systems. Contained in a 132 pin surface mount package and consisting of over 420,000 transistors the M48 is built to internationally recognised quality control standards (ISO 9001). That the M48 reads its sensors 2400 times per second, and the entire control program is recalculated 200 times per second demonstrates its power. In personal computer terms the last PC to use a 16 bit processor was the '286' released in the early 1980's whereas 32 bit is still current technology. We were the first and to our knowledge the only people to have used this processor in this application.

MoTeC's unique software programmable switch mode drivers can trigger any injector with up to 70% less power usage than other products, drawing less power from the electrical system and generating less heat inside the ECU. Comprehensive diagnostics report on injector current usage and any wiring open/short circuit after each firing of the injector.

There is a comprehensive group of computer software tools available for the M48, including
• Engine setup, tuning diagnostics and utilities.
• Monitoring, data logging and analysis.
• Utilities for loading new program code and enabling special features.
• This software has been designed with the emphasis on useability, enabling you to quickly optimise the setup for your vehicle.

Other thoughtful M48 features include the use of programmable flash memory chip to store the control program. This means that there is no program chip or EPROM to change to upgrade the program. When a new program feature is offered you simply send the M48 the new code over the optional MoTeC connector cable and the latest features are available to you. Flash memory has also been included for the internal data logging, meaning that the recorded data will never be lost even if power to the ECU is removed. Flash storage also enables the M48 to retain information without needing internal batteries which have a finite service life.