Originally Posted by johnbmw6
It's the ECU thats limiting the tuners, it's now coming out with "remote access" by BMW
, and the cars will be giving "Feed back" on any faults that are illuminated, I will post this new info once I find it again.
So BMW will know all. No BS from customers.
The logging of data invisible to dealers/tuners has been in place since the N5x days.
This is not only for faults causing visible lights/fault messages...
BMW has and will continue to clamp down on abilities to modify the DME without leaving traces.