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 ‡

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.

Useful links

Compare the M84 with other MoTeC ECUs

View MoTeC webinars on the M84 and other ECU topics