Originally Posted by x5TT

I have booked in on WED and pick up next day in the moring, it will cost $2450.

I have talked to my mate who worked in BMW, and he doesn't recommend to do it. Because first you lost warranty for upgrading ECU, second if you do have some problems with car, they always say that's because of the upgrade, and he also mentioned overheating issues.

thanks in advance if you can share with your thoughts and experience.


Ran.