I'm not a motorhead, so I only skimmed second hand part offerings and found this: OEM Maserati part number 670006946. For optics it's advertised as noise cancel

I'm not a motorhead, so I only skimmed second hand part offerings and found this: OEM Maserati part number 670006946. For optics it's advertised as noise cancellation system, but owners' forum [0] suggests it can work either way. They also discuss a defeat mechanism. [0]: https://www.ghibliforum.com/threads/increase-diesel-active-exhaust-tone.10881/ https://www.ghibliforum.com/threads/increase-diesel-active-e...