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Discussion Starter · #1 ·
My car sounds much deeper and throatier on startup but then returns to quiet as rpm decreases. I can then rev it and it still sounds quiet. I have looked for a valve actuator (opens and closes depending on rpm) but could not find one.

Is there any way to permanently make it louder without fitting an entire exhaust system or muffler delete (illegal in my country.)

Cheers
 
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