Originally Posted by Spie
I'm really interested in getting this done. Just concerned about the re-map issue. I don't really buy the "quiet word with the service manager" approach. If the car needs a software update then it'll have one and that could make the DMS map very expensive.
That's the wonderful thing, it's free re-maps for as long as you own the car (within reason). If you have any work done on your car by BMW that results in the DMS mapping being removed, DMS will re re-map the car FOC.
I had this happend to me 535d & just as they state within 5 days of getting my car back they re-applied the mapping FOC.
As for the mapping being wiped, BMW would have to be doing some fairly heavy duty work to wipe the engine or gearbox ecu, most software requirements can be dealt with by BMW via fairly simple programming & a full ecu wipe is not required. Bear in mind the M5 has many many ecu's & the DMS re-map is only applied to the engine & gearbox ecu.
As for detectable, to date & to DMS knowledge no BMW dealer has yet found the mapping, as the worst they can do is wipe the map, their is no BMW workshop system that can detect the map & no signature of any desription. It is basically undetectable & given their are not thousands of M5's out their, a technician would struggle to really notice that one M5 was that much quicker than another, as i'm sure they don't drive that many.
As stated above, my engine ecu got wiped & the DMS mapping removed as a result & the BMW dealer concerned did not know the car had been re-mapped & the overall gains on that car were far more significant against stock (60BHP & 100nm torque).
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