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M2 Muffler mod
Has anyone done the muffler mod on the stock exhaust? I have done it on an F30 M Performance muffler. Gutted the muffler, but left a littler perforation. Sounded great. Although a little metallic with catless. Sound very nice in stock exhaust. Would anyone be interested in something like this if I were to make one?
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13' 335i M Sport. EBII/Coral Red 6MT. RPI GT exhaust, Resonator delete, PS1, GFB DV , BM3 Stage 2, ER CP, VRSF DP, VRSF 5.5in Stepped FMIC, Dinan Shockware. Carbon M Performance rear diffuser. M4 trunk lip. Conti DWS06 225/40/19 and 255/35/19
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