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Just installed mine today...first 30 or so miles-- didn't feel much of a difference-- now it pulls stronger and seems to rev quicker to redline. Very happy with initial results so far. Plan to order the USB cable and goto 3 psi---will repost review after more seat time. Coming from a modded e92 M3, refreshing to have significant power gain without hurting the wallet so much--thanks Terry!!!
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2012 550i M Sport Dark Graphite Metallic II Everest Gray Antracite wood 6MT
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