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Thread: 533i acting weird

  1. #1
    Join Date
    Nov 2011
    Location
    Redding, CA
    Posts
    22
    My Cars
    1983 533i. 1985 735i (2)

    533i acting weird

    On acceleration the car starts out fairly smooth to about 2500 then goes flat. Comes on hard at 4000 then falls flat again. Any thoughts?

    Thanks,

    Jim

  2. #2
    Join Date
    Oct 2008
    Location
    Kettering,OH
    Posts
    5,128
    My Cars
    e34 535i and 98 528i
    Sounds like you have a flat spot on your AFM. If you research AFM tuning, you will find a video on Utube. It is for a Porsche. But same kind of afm.


    Andy

  3. #3
    Join Date
    Nov 2011
    Location
    Redding, CA
    Posts
    22
    My Cars
    1983 533i. 1985 735i (2)
    Andy,

    Thanks for getting back to me on this. I've been playing with the 533i for years and also two 735's and never considered the AFM. I will get into it early the coming week and let you know how it goes. I found two videos on BMW AFM's that look promising; www.youtube.com/watch?v=hQYRep6K15k and www.youtube.com/watch?v=Z-QlPtsjh7g Also, I just saw you post about parting out the 533 and will contact you about some parts.

    Thanks Again, Jim

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