Closed Loop VVT is a more complex system to get working, however, our base-maps for various engines already exist, and should be used as a starting point. Experienced tuners will recognise the other settings, but we will cover them in detail, as well cover the setup of a typical system, such as the Ford ST170 / Puma 1.7 VVT System.


Closed loop looks at the target cam angle table and drives an oil control valve at variying frequencies to allow oil flow in or out such that the cams real position (determined by measuring the cams position in relation to the cranks)


It is first CRITICAL that you have set a trigger pattern set for your cam in the Engine Driver, and it is working - without it, closed VVT will simply not work.


The steps to tuning vlose loop VVT, in essence are:


  1. Configure the PWM output channel for where you have wired the solenoid.
  2. Use Manual/Test mode to see how the VVT operates.
  3. Find out and set the rest advance.
  4. Tune the PID settings so the cam actual advance closely tracks the Target Advance.
  5. Tune the Cam Advance Target table, while tuning VE to suit the differing airflows.