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      12-11-2012, 03:25 AM   #9
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Drives: Alpine White '13 550i
Join Date: Nov 2011
Location: Tarzana, CA

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2013 BMW 550i  [0.00]
So does the AA tune get rid of throttle lag like the Spring Booster? Or does the Spring Booster do it better because that's what its main purpose is. I'm definitely going to get an AA tune but if I piggyback a SB on that will it help even more or be useless? And is it just an on/off button or what? Really considering this, also where can I get one? There seems to be a lot all over the web but where did you get yours?
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