The Epicycle EM4 incorporates features not found in your standard Weber-Marelli computer Simple Plug-In replacement for many Weber- Marelli  equipped Ducati, Moto Guzzi, Laverda or Harley motorcycles.     Advanced Technology 32 bit Microcontroller reads sensors 2400 times per second and stores all data in FLASH memory so there’s no backup battery to go flat.  Upload new control MAPS in seconds via optional PC-Link.     User programmable Fuel / Ignition Mapping via PC or Laptop with On Screen 3D Graphing.     Individual cylinder tuning for Fuel and Ignition.

User Friendly Tuning / Diagnostic / Analysis software.

Compatible with existing Weber-Marelli sensors or cheaper units should originals require replacement.

High Speed Lambda (Fuel Mixture) logging and analysis, making tuning simple and fast. 6 hours FREE or Optional Upgrade to full time.

Add optional sensors. eg. Wheel speeds, Fuel or Oil pressure, Temps, etc.

Enable Traction Control to limit wheelspin., Startline Launch Control for fast getaways or even Pitlane Speed Limiter.

Replay your Ride, Race or Dynorun on the Dashboard Display  to view RPM, Throttle, Speeds, Gear Position, Fuel Mixture, Temps & Pressures, Fuel Used.,Atmospheric pressure or Wheel Slip with SOUND.

Multiple configurable outputs that may include Alarm indicator, Shift point indicator, Tacho driver, Fuel pump relay timer or Radiator cooling fan.

Links to     Streetbike Magazine article Specifications   EM4 Maps EM4 accessories

The EM4 P7/P8 unit incorporating Carbon Fibre  mounting tray installed in 916SP