ok so im in the states an d drive a 98 cadillac catera i love the car as much as people talk bad about it so i figured i would try it out. so while trying to check a fuse yesterday i pulled the ecu out to get a better look and when i did the goof up happened the ecu hit the pos+ side of the battery and i allready new that it wouldnt start so i tried praying that it would and it didn't

so i today replaced th ecu with one from a local yard and still nothing i also replaced all of the relays it just cranks with no sign of trying to start the car ran perfect until i messed it up the factory motronic is 0 261 204 663 and the one i installed is 0 261 203 988 will this matter? the plugs are the same? any help would be greatly appriciated i love german cars so the time being i will have to drive my e30 bmw 8-)