If you're going fast you have to know that your going to be able to stop.
If you have to grab a bunch of brake pedal at 100mph plus, you want to be sure that its there. If you have to hit the pedal five or six times because the car is not stopping as straight as you would like it to due to raod conditions, etc., will a vacuum pump keep up with the demand in that scenario? I'm not sure cause I've never tried it with a vacuum pump...but I have with the hydraboost and it works great. I'm not trying to be argumentative, just something else to consider :wink: