First, congratulations on your new Dodge! The short answer to your question is, no—under the Magnuson-Moss Warranty Act, adding an aftermarket exhaust will not, in and of itself, void your Dodge’s warranty.
But—and this is a pretty big but—if it’s determined that your car begins experiencing issues directly caused by installation of this aftermarket exhaust, that will void your warranty. That’s why it’s important to consult your Dodge dealer or the experts at your local garage before installing aftermarket mods on your new car.