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Exhaust Valve Mod?
Hey all,
My friend with a 335i showed me a "mod" that he performed where he unplugged the exhaust valve making his car sound like a cold start all the time.
Is there an equivalent to this on the 1M? Does it even have an exhaust valve? I noticed cold start has a great sound to it but the car quickly quiets down. I cannot find information on this anywhere pertaining to the 1M given the different rear section and whatnot.
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