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Message: <blockquote data-quote="Ah Yew" data-source="post: 11810" data-attributes="member: 12199"><p>Hello,Need some advise here from all the sifus (BM Master). I just got my UDM 1 month ago. Is recond from Japan. Model 320i (E46). The time I got my UDM, the milage is about 28k.Here comes the problem. Everytime I slow down the car, I can hear rotating sound from behind, and follow by "koo" sound. Some thing happen when I start to accelerate. I can hear the "koo" sound very clearly. It only sound once. During normal drive, no sound.Hope all the Sifu can understand my problem.... This "koo" sound really make me worry. I did send my car to workshop, but the mech couldn't find out where the "koo" sound come from.  The salesman told me this "koo" sound is normal for E46.... but I don't think so.... coz this 1 is bimmer (UDM Leh) not Pxxxx or Kxx.Thank You Very Much......:rock:</p></blockquote><p></p>