Hey everyone iv had my e46 320td for about 6 months now and the turbo lag is getting quite annoying now, so once I have sorted the thermostat and removed the cat's I was looking to get it remapped (professionally) I was just wondering if its possible to get a cable to backup and write to this ecu (if so which 1), just incase I ever need to re flash either the standard or modified map. But I have no intention of modifyong the map myself. Im very confident with mechanical work and computers but even I dont fancy messing with that lol.
P.s its a 2004 model if it makes a difference
Any help given much appreciated so thanks in advance