Dialynx - MoTeC ECUs M48

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The M48 Engine Management System (ECU) has 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.

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 optimum at all points. Sequential injection lets you fire the injectors at the optimum time in the engine cycle. Advanced tuning gives many extra features including traction and launch control, Full Throttle gear shift, Turbo Antilag, additional sensory compensations and 512Kb of on board data logging that lets 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 (ECU's) 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 micro controller 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 which 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.

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 are recorded after each firing of the injector.

There is a comprehensive group of computer software tools available for the M48, including

Engine set-up, 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 usability, enabling you to quickly optimise the set-up 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.

Specifications (Items in BLUE are for the Advanced Tuning option only)

M48 Clubman and M48 PRO

General

Microprocessor 32 Bit 33 MHz with Time CO Processor
Quality Standard ISO 9001
Manufacturing Standard IPC-S-815-A Class 3 High Reliability
Warranty 2 year Parts & Labour
Burn In -50 to 70°C for 32 Hrs
ECU Control Software stored in updateable FLASH memory
High RFI Immunity
Low heat generation
Battery transient protection
Environmentally sealed electronics
Water proof connector with gold plated contacts
Case Size 150 x 100 x 36 mm (5.9 x 3.9 x 1.4 inches)
Weight 0.48 kg (17 oz)
Cylinders 1,2,3,4,5,6,7,8,12
Engines 2 stroke, 4 stroke, Rotary (1~4), Odd or Even fire
Maximum RPM >15,000 RPM

Fuel Calibration

Accuracy 0.00001 seconds
RPM sites are user programmable
Load sites are user programmable
Main Table (3D) 20 RPM sites x 11 Load sites (220 points)
Main Table (3D) 40 RPM sites x 21 Load sites (840 points)
End of Injection 20 RPM sites
End of Injection (3D) 20 RPM sites x 6 Load sites
Overall Trim ±99 %
Individual Cylinder Trim ±99 %
Hi / Lo Injector Balance (3D) 20 RPM sites x 11 Load sites
Hi / Lo End of Injection (3D) 20 RPM sites x 11 Load sites
User adjustable Eng Temp, Air Temp & MAP compensations
Two Auxiliary compensations
Injector Dead Time Compensation
Accel Clamp, Decay & Sensitivity
Deccel Clamp, Decay & Sensitivity
Cold Start (5 parameters)

Injection

8 group sequential
User programmable injector current 0.5~6 Amps peak
Battery Comp to suit any injector

Boost Control Calibration

Main Table 20 RPM sites
Main Table (3D) 20 RPM sites x 10 Throttle sites or 10 Gear sites
Overall Trim
Engine Temp & Air Temp comps
One Auxiliary compensation

Ignition Outputs

Up to 2 Ignition Outputs
One output may drive up to 8 coils using the MoTeC Ignition Expander
Versatile Ignition Interface allows connection to many OEM ignition systems including :
GM EST DFI systems
FORD EDIS DFI systems
Many Others

Trigger Sensors

Directly compatible with most OEM trigger systems including
HALL, Magnetic and Optical types
Multi Tooth (e.g. Mazda and Toyota)
1 or 2 Missing Teeth (e.g. Porsche)
Many other special types, e.g.. Ford Narrow Tooth, Nissan Optical, Harley Davidson

Ignition Calibration

Accuracy 0.25 degrees
RPM sites are user programmable
Load sites are user programmable
Main Table (3D) 20 RPM sites x 11 Load sites (220 points)
Main Table (3D) 40 RPM sites x 21 Load sites (840 points)
Overall Trim ±99 %
Individual Cylinder Trim ±99 %
User adjustable Eng Temp, Air Temp & MAP compensations
Two Auxiliary compensations
Dwell Time 20 RPM x11 Battery
Odd fire engine capability Each Top Dead Centre angle may be specified Resolution 0.5 degree

Special Functions

Traction Control & Launch Control (2 wheel speed sensors) (or 4 sensors using the MoTeC TC Mux)
Gear Change Ignition Cut
Narrow Band Air Fuel Ratio Control
Wide Band Lambda Control (Requires Lambda option)
Over Run Boost Enhancement
Warning Alarms (Sensor HI / LO)
Gear Detection
Ground Speed Limiting
Dual RPM Limit
Nitrous Oxide Enrich / Retard
Air Conditioner Request
Over Run Fuel Cut
User definable sensor calibrations
RPM Limit Hard or Soft Cut Fuel and / or Ignition Cut

Other Sensors

Throttle Pos, Manifold Pressure, Engine Temp & Air Temp
Narrow Band Oxygen
2 Auxiliary Sensor inputs
2 Digital / Speed Inputs

Data Logging

Optional Logging memory allows logging of all ECU parameters
Memory Size 512 KByte
Logging Rate 1~20 sets / sec
Logging Time 10 minutes at 5 sets / sec (28 Parameters+Diags)
PC Software is available for analysis of the logged data (See separate brochure)

Diagnostics

Injectors Open Circuit, Short Circuit, Peak Current Not Reached
Sensors Open & Short circuit
Operating Errors RPM Limit Exceeded, Injector Over duty, Over Boost, Low Battery, REF Error etc.

Operating Conditions

Internal Temp Range -10~85°C
Ambient Temp -10~70°C (Depending on load & ventilation)
Operating Voltage 6~22V DC
Operating Current 0.4 A max
Reverse Battery External Fuse

Calibration

PC Software is available for calibration

Telemetry Link

Optional Telemetry Link allows real time monitoring and data logging

Auxiliary Outputs

Four general purpose outputs (1 shared with ignition outputs)
The general purpose outputs may be used for :
Turbo Wastegate Control
Idle Speed Control
Fuel Used Pulse
Tacho Output
Shift Light (Gear Dependent)
Driver Warning Alarm
RPM / Load dependant device
User Defined Table (20x11) with definable axis parameters
Slip Warning
Fuel Pump Relay
Thermatic Fan
Air Conditioner Fan or Clutch