Will it work? I saw an 02 ECU a while back that had ecutek on it, and the seller said that someone in an 04 popped it in, and drove away.

Then next question, if you put an 02 ECU in an 04, and wanted a cobb AP, would you get an 02/03 cobb ap, or 04/05?

 

here is my probably useless response, since the ECU is 02, I would imagine the AP you need to use is 02-03 AP, however, whether it work or not, thats a whole 'nother question. You should ask Monoxide, Dave, I think he had his friend's 02 ECU in his 04 sedan, and the car seem to run fine, I've seen it, but throwing CEL.