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Ok this got me confused. Bmw uses metallic chains for timing. The serpentine belt is not related to timing, it only drives alternator and power steering, it has a tensionner that breaks
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E90 328i n52 auto, 3 stage IM, k&n drop in, charcoal delete, silicone boot, ebay headers, secondary cats delete, bpc tune. MILVs (soon), MT swap (planning)
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