I am also keeping a close watch on this.
This is my 5th Z4 and last one was the 30i and now have the 28i Its only months old and dont want to do anything that might void warty. Worst still is insurance. My 1st zd needed 14K worth of work, I was not hurt but the car had major damage and was pulled out of a ditch (stupid driver pulled out infront of me, she was charged with dangerous driving) I would have had no time to pull the mod so could have lost the lot. I wonder if the loss adjuster poked around and even looked for a program remap?.
But that was my 1st.
The 4th zd hit a spade and did 2K worth of damage, again needing to be picked up and dumped at BMW I could have pulled the mod out but if it was a remap itwould be sitting there to be seen. Loss adjuster was not called in work was done and I dont think BMW would have cared so no issues with either a box or a remap.
I have seen several options around and dont know the best way to go
http://www.tmcmotorsport.com/TuningB...x?s=1507930253
http://burgertuning.com/N20_BMW_performance_Tuner.html
http://www.racechip.com/chiptuning/b...80kw/index.php
So I will check with insurance first and