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      01-30-2013, 11:39 PM   #50
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Drives: E92 LCI 328i
Join Date: Dec 2012
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Originally Posted by andres123 View Post
whats aa?
Active Autowerke, aftermarket BMW tuner company. What they are refering to is the AA tune, for your ECU. Boosts HP and torque, also better mpg and etc. There is a whole thread on it found here:
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