hi there after my m52 swap on my 325 i 1987 , i notice that my brakes was not working well since. i got pressure on the brake pedal but when i keep pressing, the pressure get off easily and my brakes doesn't work perfectly. it's weird, i can brake but i can't lock the wheels( abs removed). it dangerous, because if i have to brake on a emergency, i don't thnik my car will stop at time. a change the master cylinder and is not the problem. the 4 galipers have been bleeded and rebleeded and the pedal just doesn't working well. i don't have any leaks on hoses etc. can anybody help me on ? ever happened to someone here?