JP
Is the pump switched on and off when the brake is being operated, or does the brake switch it on and then the pump runs until max vac is reached?
did you try it as a booster for the manifold vacuum or is the pump the sole source of vacuum?
does the system hold vacuum or is the vacuum zero when the pump starts.
looks a neat setup, just thinking that the benefit is only when applying the brakes for a long time, when the vac level will increase over the braking period, the benefit would be minimal if the brakes were applied in a short sharp stamp on the pedal.
thanks
Roger