Bmw 330 cd vibration after remap, dmf?? - Page 2

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    #11
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    The E46's as a whole would have that problem, same as the early E36s.
    It tends to be the petrols that rip themselves apart, from rough drivers launching them and dropping the clutch.
     
     

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    motechmike (13-09-2013)

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    #12
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    Quote Originally Posted by CAKIE88 View Post
    Spoke to ex bmw machanic today he said rear subframe mounts rip out of floor sometimes after remap
    Any1 heard of that?
    Driving like a tool will do this lol..
    Thanks Mike

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    #13
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    Well I have only done 300 miles and I don't drive like a tool so cant see it being that.
     
     

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    #14
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    Would the restrain on the DMF and clutch not be significally lower if you changed down a gear or two when accelrating?
     
     

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    #15
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    Yep, the engine is producing pulses of power, 2 per revolution on a 4 cyl, and 3 per revolution on a 6 cyl.
    Driving in a high gear means a lower engine speed, and a higher wheel speed.

    If you have the engine turning faster for the same wheel speed (ie. in a lower gear) the overall power output is smoother.

    Even without tuning, you might find you could accelerate away from a low speed in a high gear, but it would be better to have more smaller power pulses more often, than full throttle and big pulses coming slower in a high gear.
     
     

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    #16
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    driving in to high a gear for the speed you are doing,ie driving in 5th and only doing 35-40 mph will do ya dmf in, also sitting at lighs etc with the clutch depressed.
     
     

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