ESM Engine Management System Control Upgrade

ESM* engine system manager provides comprehensive control capability to help enhance uptime and boost performance for a variety of Waukesha* VHP* and VGF* engines.

Designed for ease of use and enhanced serviceability, the ESM integrates spark timing control, speed governing, knock detection, start-stop control, diagnostic tools, fault logging, engine safeties, and air/fuel ratio control.

innio waukesha engine upgrade


What can this upgrade do for you?

  • Increased engine uptime. ESM employs a variety of strategies to help protect your Waukesha gas engines, increase uptime, and improve availability.
  • Improved engine performance. Factory engineered variable ignition timing is calibrated to enhance operation across all speeds and loads.
  • Ease of use. An online troubleshooting guide provides step-by-step solutions to diagnose issues and minimize engine downtime.
esm harness upgrade


Kit includes:

  • Engine control unit (ECU) with knock sensors, ignition system, and governor actuator
  • Upgraded harness
  • Power distribution box
  • Pressure and temperature sensors
  • Customer interface harness
  • Air-fuel ratio control (rich-burn only)
  • Speed sensor
waukesha 7044 compressor

Additionally, the ESM upgrade can include these optional components:

  • Exhaust thermocouples
  • Main bearing thermocouples
  • emPact catalyst system (rich burn only)

The ESM offers a variety of control features, including:

  • Start-stop control
  • Engine safeties
  • Fault logging and diagnostics
  • Service tool with online troubleshooting guide


Find your version:

L5794LT Upgrade


Option I

Harnesses / Mounting Brackets

L7042GSI Upgrade

ESM with AFR2


Option I

Option II

Option III

Harnesses / Mounting Brackets
Power Distribution Box
Flywheel & Housing
Gear Housing
Cam Timing Disc
Conversion from Mooney gas regulators
emPact 0.15g NOx Catalyst System2

2 Optional – Requires advanced breather

L7042GL Upgrade

ESM with emPact


Option I

Option II

Harnesses / Mounting Brackets
Flywheel & Housing
Gear Housing
Cam Timing Disc