We have a 590i s4 here at work that won't go past 28 mph. From what I can tell, it should be able to do 45mph. Its being governed somehow, but I can't quite figure it out. It reaches 28 mph and then the RPMs will drop and surge until it drops below 28mph. Any ideas? Can't take it in anywhere and can't call the local dealer.. we're "out on our own".
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