[C. Ludwig]

Had a chance to sit down and look at the VDI mechanism again. The actuator rod pushes out from the canister to engage the high RPM position and retracts for low RPM. Basically the solenoid vents pressure from the air pump at low RPM and closes at 5200 to pressurize the actuator and push the rod out. With the Rtek you have control over the point at which the solenoid closes. If all the hardware work I'd leave it there and use it. But if you want to lock it in the high RPM position rotate the valve fully counter-clockwise and safety wire it into position.