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bad idle

  1. M5 E39 and E60 tips & tricks
    New to the forums because I could use some help with troubleshooting. I usually read these forums and they have helped fix some problems on my 2006 M5 (10/2005 MFG date). So the problem I am currently having is the car goes into reduced power mode after it is up to operating temperature and...
  2. E39 M5 and E52 Z8 Discussion
    hey all hopefully someone else had this issue or can help. 2000 M5 140k miles muffler and resonators removed i started to notice a hesitation when accelerating hard then a massive loss of power feels like a moped motor under the hood exhaust went blatty then just completely stalled out ses...