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Great exhaust setup. I have it on my car too. Sounds insane with the valves open and very quiet closed. No drone at all with valves closed.. less than stock drone. GLWS.
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* 2011 M3 DCT * Built 4.4L Stroker * Gintani supercharger * Brembo GT * BBS FI * OHLINS * Nardo Grey *
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