[EclipseGST]

There should be a factory check valve on the booster (2g)... Right were the vacuum line attaches to the booster. Even with the check valve I'm sure you will blow through the brakes.

I'd just buy a electric vacuum pump from Summit and wire it to the brake switch. Thats what we are doing with Vassils car. Get rid of the line on the manifold and every time you hit the brake pedal, the vacuum pump comes on and creates awesome vacuum for the booster.