Thank you very much for the test performed. There is a discussion on the NASIOC forum about the effectiveness of a "pump speed controlled" WI system. Your data has helped a great deal on clarifying a few mysteries.
Driving the HSV:
We do have two "peak and hold" driver for the HSV, 12V and 24V. The 12V version will not speed up the cycle time but will reduce the current to 1/4 of the origuinal value -about 250mA from 1A @12V
The 24V driver will double the cycle time by about 100%, valve take 1ms to open. But there are no 24V supply on the car unless to add a voltage doubler to boost the 12V to 24V.
