Isn't a X5/X6M a beast anyway? Can you explain to me what the tunes add? Is it real gains or more just a little better throttle feel? Or is it just the thought that more is better?
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2014 335i RWD: ZMM, ZDA, ZDH, ZPP, ZTP, 2NH, 2TB, 5DL; Z4A MPPK; AW ext / VB int
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