bought a turbo off a friend . i dont know too much about it butt for the price i thought it wouldnt hurt . anyways all i know is its off an audi something with the specs above . its a 4 bolt with an external wastegate .

i would like to know more information about it . like what is the spool up on one of these and the power that they make . how much boost and hp can these things handle ?! what kind of collector or flanges would i have to get for it ?! i have no clue about these things and would like to learn more about it so i know where i can go with this turbo . planning to put it on a h23 . tia .