DC_94S4

needless to say my car has been stressing me out big time! A couple weeks ago the car cut off while I was driving a few times and then wouldn't start at all (no trouble codes). I found out that the #3 coil was bad so I replaced it with a used one from shokan (i needed it FAST),and it seemed to fix the problem until a couple days later when I had problems starting it again. It would take 5 or more tries to start and then yesterday it wouldn't start at all. It looked like the used #3 coil I put in went bad so I replaced it with a new coil and the car started right up fine for a few starts and now I'm having trouble starting it again. Now I'm getting the trouble code 1111 bad ecu???? After I pulled the fuse to the ecu to reset it, the car started up fine the first time I tried, then the next time it threw the 1111 codes at me and wouldn't start until like the third try. I'm losing it! I know there must be a chip because I get 20-21 psi boost. Is it new ecu time??Any thoughts? Thanks