AussieSVT,
Say no more. I had no idea that brand X used manifold vacuum to introduce water. :rolleyes: I wouldn't even imagine these guys would try that, especially at the price they are asking. As an engineer, I had just assumed (my fault) that these guys used a variable pump to pressurize the water line for different rpm. I look forward to seeing your finished product and seeing a dyno chart. In fact, I'm sure my brother would love to see the car and talk with you as he had considered making a kit himself.
Keep up the good work.
