Unless you have a brand new engine or have completely rebuilt, i wouldn't do it.. You engine will not handle the extra boost for long. you'll fry it... ________ I have an '81 320iS and would LOVE to get my hands on a turbo kit. I hear that these kits boost performance like ten-fold and was wondering if anyone has any information on them. I already contacted Dinan, Callaway, AC, and no one has helped me out!