Hi Guys, was just wondering weather an e3 ecu would just be a simple plug and play in my car as ive been offered an e3 ecu which has a ecutek map on it but mine currently has a y7 in, i know it will need mapping to my car but just wondering if i can put the ecu in and my car will run or will it need coding to my car.

my car is a 1999 uk classic wagon

cheers