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  1. #1
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    335i bucking/surging

    My car is having like little hick ups under a light acceleration and sometimes a heavy buck under a full throttle , what can cause this ? Adjust BOV ? NEW plugs ? Leaks ?

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    Bump to help him out.

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    No CEL's or codes?

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    mods? octane? how often does this occur?

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    Click here to enlarge Originally Posted by DarkPhantom Click here to enlarge
    mods? octane? how often does this occur?
    He has a Procede and is trying to get his problems resolved. We are doing what we can to help him in lieu of positive support.

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    Hmm, maybe someone w/ the Procede can chime in?

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    Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
    My car is having like little hick ups under a light acceleration and sometimes a heavy buck under a full throttle , what can cause this ? Adjust BOV ? NEW plugs ? Leaks ?

    Hmm..this sounds alot like what I am experiencing without the heavy buck. I could certainly call the missing/hestitation I feeling a hickup. My car tends to accelerate well under full throttle..it is low to moderate throttle that tends to see this on my ride. Hmm.....maybe you need to start with some fuel system cleaner from BMW.

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    1 out of 1 members liked this post. Yes Reputation No
    Maybe try uploading the maps/firmware again and reset adaptations?

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    Click here to enlarge Originally Posted by zeel Click here to enlarge
    Maybe try uploading the maps/firmware again and reset adaptations?
    This was suggested to him, not sure if he did it or not.

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  10. #10
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    coke, are you running the 3-15 beta map/firmware?
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    2007 335i Coupe
    Mods: Check the Garage

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    Have you tried to turn off the ProCede?
    Does that eliminate the problem?
    Just to check if it is at all tune related.
    There are two theories to arguing with women. Neither one works

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    Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
    My car is having like little hick ups under a light acceleration and sometimes a heavy buck under a full throttle , what can cause this ? Adjust BOV ? NEW plugs ? Leaks ?
    coils/plugs/injectors

    start there... 9 outta 10 times it's something with those 3

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    will fuks with it tomorrow

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    Click here to enlarge Originally Posted by skifreek Click here to enlarge
    coils/plugs/injectors

    start there... 9 outta 10 times it's something with those 3
    Are we sure he has a procede? This seems to be a problem that only procede users get...

    OP: if you do have a procede, I would recommend reflashing the software first, and then removing the procede second.

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    i BELIEVE i HAVE A VACUUM LEAK !

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    Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
    i BELIEVE i HAVE A VACUUM LEAK !
    Ok, and what you led you to this conclusion?

    Did you also try disabling the tune as suggested to see if that fixed it?

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    Click here to enlarge Originally Posted by n54BoostOnCoke Click here to enlarge
    i BELIEVE i HAVE A VACUUM LEAK !
    That reminds me of an '02 Lexus ES300 we used to have, it would buck like no other! The throttle body had a vacuum leak.

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