I un-installed mine when the car went in for a service last week, but purely to be satisfied that my custom map had not been altered in any way with a possible software update by the dealer.
Totally aware they'll know it was installed before, but so used to BMW & Audi reflashing ecu's every time a car goes in that i guess it's just habit. If my GT-R goes into the HPC stock & for any reason gets a software update then all is well as i just appky my custom tune over that when i get home.
Bang tidy as they say
MY15 LCi F10 M5 (DMS Stage 2 Tuned) in Monte Carlo Blue With Extended Sakhir Orange Interior. Options: Bootlid Operation Powered, Loudspeaker System Harman Kardon, Reversing Assist Camera, Surround View, Universal Remote Control, Internet & Sun Protection Glass