Whether you wait for the OBD tune or have your DME bench flashed is the same outcome. When I had the OE tune on my N54, i took my car in for several services (Big ones like turbo failure, water pump failure, transmission issues ) and the tune was never noticed or flagged. I never erased it, just dropped the car of as is.
Originally Posted by qadhi79
Flash tune is lost after a dealer update..so better if you can wait till they develop OBD2 tune..its stealthy as no additional hardware is installed and you can always flash the stock tune when going for service and flash the performance tune again when you are back..I did this a lot of times with my ML63 AMG and the dealer never detected anything
And yes Deep if the dealership does a program update you will lose the flash. But OE will honor the wipe and reflash your car.
2012 535i M-Sport
Previous BMW's: 87' 528e / 04' 325i / 07' 335i / 08' 335i / 08' 535i
Last edited by RambleJ; 01-11-2013 at 02:58 PM.