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  1. E39 M5 and E52 Z8 Discussion
    So I hit a new-to-me problem with my M5 today. 2-3 months ago, the car started misfiring on the highway. Pulled the codes and got the standard misfire codes for a specific cylinder. Replaced the plugs and the coil on that cylinder (82K miles). The car has been fine since -- I did the thermostat...
  2. E60 M5 and E61 M5 Touring Discussion
    So this car has had its VANOS units replaced along with both IONIC sensors (after all 10 coils showed misfire errors) and the pressure accumulator. It went in for the VANOS job after some time with very poor idling and engine performance and having it checked with Autologic it was done. Drives...
  3. E39 M5 and E52 Z8 Discussion
    I know it's long, but i'd appreciate the read. You can skip half way down if you've never run a dyno before. Got the shark in the mail today and hope to do before/after dyno runs in both 3rd and 4th gear this weekend :1: Ok, so I have access to a dyno (it is not owned by a performance shop)...
  4. E39 M5 and E52 Z8 Discussion
    OK, the beast has been backfiring, bogging down in the cold and popping and pinging when I blip the throttle when it is warm. On freeway onramps (especially those hard right ones) the car literally stumbles and two times has gone into limp home mode. The MAFs were replaced as that was the code...
  5. E60 M5 and E61 M5 Touring Discussion
    I’m the new owner of a 2006 M5, Sapphire Black, purchased CPO from a BMW dealer @ 42K miles, and a new user of the M5Board. :) Love how it drives, but . . . <o:p> </o:p> Over the past week I’ve gotten to understand the personality of the M5 a great deal more than a series of test drives...
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