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Filter Question fo rRPI Scoop
How much HP would I leave on the table if I removed the charcoal filter and stuck with the paper OEM filter vs. going with the BMC/AFE type filter? From what I understand, our OEM paper breathes pretty darn good.
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2007 M Coupe w/NAV/Premium/Extended Leather, Clearbra, DICE, 4.10 BMW Motorsport Polished LSD, Active Autowerke Gen IV Headers, Supersprint Race Exhaust and X-Pipe, ESS Tuned DME, KWV3 Coilovers, Volk RE30, OEM Strut Tower Brace, Short Antenna, JL AMP, JL 10W7, Valentine V1.
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