I replaced everything on the MK2 GTI brakes this winter. New master cylinder, vacuum booster, brake lines, rotors, calipers and pads. The front rotors and calipers are from a 93 Passat (they are bigger than the Golf's) I've used the power bleeder, vacuum bleeder, and the old fashioned 2 man bleeding methods. Pedals feels semi firm, but as soon as ai start the car and the pedal goes soft and very little braking. I swapped in another master cylinder and booster, still no change. Feels like there is a ton of air in it somewhere. Is there some trick to bleeding these damn things. It does not have ABS. Before you rule nerds point out the illegal passat stuff, I race in GTS Challenge, not IT. :P

Thanks in advance, Mark