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  1. BMW 6 Series - Tech Talk E24,E63,E64,F12,F13
    My engine doesn't sound and drive as used to, in idle it's 500rpm sound loud and also feels loss of power when I floor accelerator, today I revved engine and sound like backfiring, is it? the link is below:
  2. BMW 3 Series Forum - Technical Talk on the BMW E21
    Hi all Have my 328i engine problem everytime when let go of the accelerator I get backfire, but I have a smooth Idle and acceleration it's just the de-acceleration. Has any one got a solution for this problem:confused Info on the car Inlet is standard Outlet has Sports flow CATs ,Eisenmann...