The M84 is a versatile, race-bred ECU that is suitable for a broad range of high performance applications, including engines with up to 8 cylinders. It also suits rotary engines with twin, triple or quad rotors.
This new, entry level ECU is based on the advanced technology in MoTeC's benchmark M800, with a package of features to suit more moderate system requirements. It includes on-board Wideband Lambda plus 512 kB of data logging memory as standard.
Install it as a stand-alone ECU or as part of a complete motorsport-ready engine management and data acquisition solution.
Basic Specifications
Outputs
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8 x Injector outputs - high or low ohm
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6 x Ignition outputs
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8 x Auxiliary outputs - for functions such as boost control, idle speed stepper motor and many more
Inputs
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Throttle Position
- Manifold Pressure
- Mass Air Flow
- Fuel Pressure
- Oil Pressure
- Exhaust Temperature
- Gear Position
- User 1
- Air Temperature
- Coolant Temperature
- User 2
- 3 x Switched Analogue Temperature
- 2 x Lambda Inputs (supports Wideband and Narrowband sensors)
- 4 x Digital Inputs (wheel speed or switch)
Communications
Physical
- Case size 147 x 105 x 40 mm
- Weight 500 grams
- 1 x 34 pin and 1 x 26 pin waterproof connector with gold plated contacts
Engine Tuning Features
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Windows based ECU Manager tuning software with user definable screen layouts
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Individual cylinder tuning of both fuel delivery and ignition timing
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Suits modern engines, including those with coil per cylinder ignition
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Fully configurable axis points on all tables
- Highly configurable crank and cam trigger inputs to suit almost all OEM sensors and tooth patterns
- Single Wideband Lambda input (dual optional)
Additional Distinct Features
- Capable of advanced control functions, such as:
- Traction control
- Overrun boost enhancement (anti-lag)
- Gear change ignition cut (flat shift)
- Boost control
- Nitrous injection (to be included in a future release)
- Dual stage injection (Hi/Lo injection)
- Configurable sensor inputs including custom calibrations
- Capable of receiving and transmitting data via the CAN bus
- Capable of receiving data from two Lambda measurement devices via CAN
- Integrated advanced diagnostics, including injector and crank trigger diagnostics
- Ref/Sync capture displayed on the built-in digital oscilloscope
Data Acquisition
- Internal data logging (512 kB) with fast download via CAN
- State of the art i2 Standard data analysis software
Several options are available as upgrades to customise and grow your system. These additional features are activated through a simple password system, at any time when you need it.
For the M84 engine management system the following upgrades are available:
Dual Wideband Lambda
Single on-board Wideband Lambda is included as standard, with a dual option available as an upgrade for applications that require more than one Lambda input.
Advanced Functions
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Traction Control and Launch Control (2, 3 or 4 wheel)
- Hi/Lo Injection (secondary injection)
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Gear Change Ignition Cut (flat shifts)
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Overrun Boost Enhancement (anti-lag)
Traction Control ‡
The Traction Control option enables user-programmable Traction and Launch Control. Traction Control reduces engine power, by cutting cylinders, to limit wheel spin when traction is broken.
Hi/Lo Injection ‡
Hi/Lo injection enables control of primary and secondary sets of injectors. The injectors are controlled using a 3D table to define the balance of fuel flow between primary and secondary injectors.
Gear Change Ignition Cut ‡
Gear Change Ignition Cut (also known as 'flat shift') momentarily cuts engine power to allow a gear up-shift at wide open throttle. An input to the
ECU is used to trigger the cut.
Overrun Boost Enhancement ‡
Enables boost control to reduce turbo lag and improve throttle response in tight and twisty stages for turbocharged cars, specifically in rally events.
‡ Traction Control, Hi/Lo Injection, Gear Change Ignition Cut and Overrun Boost Enhancement are available separately or as part of Advanced Functions.