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VVT: Variable Valve Timing

rusEFI has proper closed-loop VVT control, supporting multiple trigger options including:

  • "one-tooth"
  • Mazda Miata NB (2nd generation)
  • Mazda Skyactive
  • Toyota 2JZ family
  • Bosch Quick Start
  • Ford Focus ST 170
  • Ford Barra: 3+1
  • Nissan VQ family
  • Nissan MR18
  • Honda K family
  • Mitsubishi 3A92
  • Mitsubishi 4G92/93/94
  • Mitsubishi 4G63
  • Mitsubishi 6G75

rusEFI supports up to quad VVT input/output.

rusEFI trigger configuration is the most confusing part of rusEFI configuration, unfortunately.

If rusEFI does not know your exact overall trigger shape and you use a composite setup with a crank sensor driving RPM and a single-tooth cam sensor providing phase information, that's considered "4 stroke without cam with VVT", even if you do not have VVT. :(

VVT mode 'first half'

This mode could be used for skipped-tooth wheels with single tooth cam sensors in order to support individual injection and coil-on-plug setups.

For example, 3/1 skipped wheel with cam sensor in the first half of the 720 cycle:

VVT First half

VVT Config

Full list see All Supported Triggers