Brakes are killin' me!!!

[JSiN]

so i was hoping someone could help me out with my situation....
basically, i replaced my vacuum booster, and after installing it, and manually bleeding, etc.., i am still not getting any pressure building up in the peddle, nor is there any difference in the peddle with the car on OR off....heres a link to the site where i got the booster, and if you look at the item description, it mentions that its not compatible with a certain unit, which i didnt think i had, but am now not sure....

http://www.autohausaz.com/search/product.aspx?sid=pqvcnh45p5wz5555rna0qi45&makeid=800003@BMW&modelid=1011823@325IS&year=1987&cid=14@Brake%20%26%20Wheel%20Hub&gid=1678@Brake%20Booster/Brake%20Servo

anyone know what i need to do....maybe im not bleeding properly, or need to something with the a.b.s....help?!?!?
thx

[jlevie]

No pressure in the brake pedal won't be as a result of a bad brake booster. That will bet the result of air in the system, a leak, or a failed master cylinder. If you properly bled the system and there are no leaks, replace the master cylinder.