yy101
04-30-2007, 02:25 AM
Recently took my 540i to my local indy and he put the all-in-one car ECU reader on my car and showed me the kind of data he can access and he noticed that my ECU had a program code 29, he commented that stock 540i has a code 25. Does anyone here know whether a code 29 is a software code for a performance ECU and if yes which one?