My sons engine locked in his 1998 grand prix supercharger and I got a 2001 supercharger engine in it..had to replace the alternator due to the brackets were all different..once we got everything hooked up we put the battery in it and the wires and plugs and Ecuador unit started smoking so we unhooked battery..is there a difference in these ecu's or why the smoke? Help??? I have already dropped alot of money in this car..any ideas?