[Silent9n54]

swapping tcs from 2008 335i to a 03/2007 335i

With the newer TCU you can get a custom tune for it

Any coding needs to be done ?? or just flash XHP all over again to add the new VIN ?

[blown07]

Originally Posted by Silent11N54

swapping tcs from 2008 335i to a 03/2007 335i

With the newer TCU you can get a custom tune for it

Any coding needs to be done ?? or just flash XHP all over again to add the new VIN ?

This is the thread I followed when I did it using WinKFP to change the VIN number on the new TCU to match your car before you flash the general license. I did it 6 months ago so it's already become a little foggy on the exact steps lol.
https://www.e90post.com/forums/showthread.php?t=1110749
As you probably know you can reuse your XHP General licenses and just buy the Sutphin flash and flash your trans. You won't be able to use the XHP OTS map pack on your new TCU because it will have a different hardware number but doesn't matter when you go custom.