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

• 8 x Injector outputs - high or low ohm
  

• 6 x Ignition outputs

• 8 x Auxiliary outputs - for functions such as boost control, idle speed stepper motor and many more

Inputs

• 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

• 1 x CAN

• 1 x RS232

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

• Windows based ECU Manager tuning software with user definable screen layouts

• Individual cylinder tuning of both fuel delivery and ignition timing

• Suits modern engines, including those with coil per cylinder ignition

• 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

• Traction Control and Launch Control (2, 3 or 4 wheel)

• Hi/Lo Injection (secondary injection)
  

• Gear Change Ignition Cut (flat shifts)

• 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 ‡

Gear Change Ignition 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.