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  1. DME/Computer Failure?

    E39 M5 and E52 Z8 Discussion
    My car has about 150K miles on it and I've been battling a problem for almost 2 years. The car runs rough on a cold start and then runs better but is still a little "off"....the power has been the same. Because the car is so old I've replaced the mafs, all the O2 sensors, spark plugs, coils...
  2. M6: stock to RPI, tuning needs

    E63/E64 M6 Discussion
    I am attempting to figure out whether I need to procure a bmw m6 electronics specialist to conduct a software/computer enhancement to my 2007 M6 (conv - e64) in order to gain additional 'tuning' benefits once the addition of the following modifications: RPI GT HEADERS - BMW E60/E63 M5/M6 RPI...
  3. Onboard Computer/Nav System not booting

    E39 M5 and E52 Z8 Discussion
    When turning on the ignition, the computer screen is not booting. It displays the warning message, and when I attempt to push the round button to "accept," to go to the main menu, the screen shuts off and tries to re-boot, over and over again. It also resets if I don't do anything. Anyone else...
  4. E60 M5 ECU/CHIP UPGRADE QUESTION

    E60 M5 and E61 M5 Touring Discussion
    Are there any ECU upgrades/chips that don't void warranty? Maybe Dinan? If not, what are your recommendations?
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