The M4 is one of MoTeC’s earlier generation engine management systems, sharing a similar architecture to the M48. Highly capable and still very popular, the M4 represents excellent value for sequentially injected four cylinder and two rotor applications. Applications up to twelve cylinders are possible using group fire or semi-sequential injection.

Several upgrades are available to increase the functionality of the M4 including traction and launch control, anti-lag and data logging, to name just a few.

The DOS-based tuning software is efficient and easy to use.

Basic Specifications

Outputs

• 4 x Injector outputs—high or low ohm

• Up to 4 x Ignition outputs—see optional configurations ‡
  

• Up to 4 x Auxiliary outputs—switched or PWM—for functions such as turbo waste gate control, idle speed control, intercooler spray bars, or to be used as additional ignition outputs ‡ 
  

‡ Optional ignition/auxiliary output configurations: (configurable in software)

4 ignition outputs and 1 auxiliary output

3 ignition outputs and 2 auxiliary outputs

2 ignition outputs and 3 auxiliary outputs

1 ignition output and 4 auxiliary outputs

Inputs

• 3 x Analogue voltage inputs—fully configurable including custom calibrations

• 3 x Analogue temperature inputs—fully configurable including custom calibrations

• 1 x Wideband Lambda—for Lambda measurement and control

• 2 x Digital/speed inputs—for wheel speeds and function activation

Communications

• 1 x RS232

Physical

• Case size 120 x 100 x 36 mm
  
• Weight 400 g
• 1 x 36 pin waterproof connector with gold plated contacts
  

Useful links

Compare the M4 with other MoTeC ECUs

Downloads