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What exactly does this mod do, just alter the exhaust note.
This is the first time I see anything about a golf tee mod! Time for research!
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2007 E92 AW/Coral Red/Alumin, 6 speed manual, ZSP, PROCEDE V3.1, Factory Short-Throw Knob, Bms Filter. 12/7/07 - 12.84 @ 109.36
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