If its already in there might as well leave it there. I never noticed any change in sound and Im sure your not missing much. Its a better filter than the oem one IMO. I have one and Im happy with it. It worked better than both my riss intake and vishnu dci.
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2021 M5 COMPETITION LCI Brands Hatch Gray on SIlverstone, carbon roof, comp wheels, Mperf splitter, carbon pro spoiler, carbon diffuser , carbon paddles, executive pkg. Dinan HAS, RaceChip, dinan spacers, FC stud kit, etc
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