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If you can shell out the bit extra, BPM Sport is an amazing option. Mike has been tuning cars for ages and I couldn't be happier with the product. Custom map and everything. My friend who had BM3 OTS maps on his M4 went BPM as well!
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2014 F32 435i /// M Sport Brakes /// Vorsteiner VFF103 /// Resonator Delete /// MP Carbon Front Spoiler /// MP Carbon Mirror Caps /// MP Carbon Rear Spoiler
@slowf32 on instagram
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