dreek39sr20

Wassup fellow NISMO owners...I have s13 with sr20det installed with some go fast goodies...I have garrett gt35r turbo, 1000cc injectors, aem ems v1, aftermarket intake, ls2 coils, and built head...ok here's my problem. The aem ems I finally got it running and now when I try and turn the engine off (key off), the engine still runs. So to stop the engine from running I pulled the ls2 plug from the spark plug and let it die...but yesterday when I did this coil 1 stopped firing...JUST COIL 1 ...I switched coils and plugs with cylinder 2 and still no luck...I started the car again and with the ems you can control coils so I went to coil 3 and deactivated it and it stopped then reactivated it and it fires right up..ok tried that on coil 1, nothing.. im thinking this is an EMS problem....ANY SUGGESTIONS??? OH ALSO THIS WAS A PREOWNED ECU AND ALL PARAMETERS WERE TUNED BEFORE...