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      09-22-2011, 12:20 PM   #5
baylor1er
Sic 'Em Bears
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Drives: 135i coupe Blk on Blk
Join Date: Mar 2010
Location: Waco/Houston, TX

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The JB4 has an auto-delete function for the "hidden tuner code" that tells the dealer if you have been running high amounts of boost. The only thing I have heard about is if you get the speed delimiter and take the car above the factory top speed (I believe 130mph non-sport, 155mph sport package) they can read that and will void the warrenty.
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6AT/Sport Package; BMS JB4 Map5; Custom Exhaust; Eibach Pro Street Springs
http://www.youtube.com/watch?v=-xNzG9ghq3s
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