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Paulo Acoba 🐀 on Twitter: "TIL about Audi's Soundaktor system to add exhaust noise but to also cancel diesel noises by emitting "a low-pitched, roaring sounds" . Audi diesels literally have speakers
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Car Exhaust Muffler Sounds Speaker Vacuum Air Valve Auto Parts Silencer Normal Closed - Mufflers - AliExpress
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