The standard factory exhaust system, heavily restricted by emissions equipment, mutes the signature straight-six soundtrack of the B58 engine. Replacing the restrictive factory catalyst with high-flow Exhaust Downpipes drastically reduces turbo backpressure and unlocks immediate horsepower. Enhance the acoustic profile of your open-top G29 with a premium Cat-Back Exhausts system, a road-legal GPF-back Exhausts setup, or a complete Turbo-Back Exhausts system. For dedicated motorsport builds seeking maximum volume, utilizing GPF Deletes will remove the restrictive filter media entirely to let the roadster scream.