The black box behind the drivers seat is the Idle Speed Control unit. As far as I know, there shouldn't be a problem at all with swapping this unit out. A while back I had to troubleshoot my Idle Speed Circuit (turned out to be a bad wire). And nowhere in any of the diagrams was there any wire connections that were transmission specific. -Robert vin 6585 "X" --- In dmcnews@xxxx, "erikgeerdink" <erikgeerdink@xxxx> wrote: > I have an ECU unit (black box behind the drivers seat) that I'm not > sure if it works or not. It appears to be good. The connections and > such look good and the box doesn't have any problems with it. Would > I damage my delorean if I swapped out ECU's to test? The ECU that I > want to test came from an automatic, and my car is a manual. Where > there any differences? > > Thanks, > Erik