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      11-22-2009, 08:22 PM   #5
Mike@N54Tuning.com
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Drives: 2007 335i, 2015 M3
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Quote:
Originally Posted by nyc3r View Post
not unless there is a reason to. that's extra work
+1

I advise all my customers to leave it in for routine maintenance, and take it out for power-train warranty work. But if you are really paranoid then you can just remove it all the time.

Like mentioned above it is diagnostically invisible so the only way BMW could find it is if they went into the ECU compartment.

Mike
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