The G8x M Performance Exhaust was recently made available as a port installed accessory, so we added it to one of the cars that was inbound to the port. The $8k option also comes with a carbon fiber diffuser. It is a little underwhelming especially if you're used to the F8x M Performance Exhaust.
Both G83 M4 Competition xDrive Convertibles were set up in sport plus engine mode.
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