My 95 M3 has been sitting for about a month and a half because the engine wont fire. I don't have much time to look at it because I'm a grad student and have another car that is getting me around. So I've tried numerous times to get a code reading but all to no avail. Any help would be appreciated.

On a sidenote, I've went through and changed the plugs, checked the fuel relay, and fuel pump. All are good and the car still doesnt fire.

replacing parts gets expensive doesnt it? first check if you have spark