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      04-28-2010, 12:02 AM   #4
PedM5
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Drives: '02 M5
Join Date: Sep 2008
Location: socal

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If it happened to you, you'd be the first one. This question is asked on a fairly regular basis and the fact is, dealers up to this point can't tell if your ecu has been modified. It behaves just as a stock ecu should, just with more power

Also look up the magnusson moss act, the dealership can't void your warranty just because your car is modified, that's a common misconception.