The 2025 GMC Sierra 1500 is offering a new exhaust system enhancement introduced for the 2025 interim model year, also known as the 2025.5 model year. Customers can now opt for the Sport exhaust ...

The update includes a new Sport calibration for the active exhaust system, identified by RPO code RWQ. Essentially, the revised calibration delivers a more aggressive sound profile while driving.

We thank Gudrun Bethge, Ulrike Winkler, and Doris Grieshammer for their technical assistance, Agustin Liotta for his support with the pO 2 recordings, and Marie-Elisabeth Burkart for her support in ...

Novitec, for example, has rolled out an aggressive race-spec exhaust and a so-called Power Optimized setup. Both of them feature exhaust flap regulation and Novitec-designed tips. The systems can ...