Review on Flowmaster 8524553 Super Muffler 409S by Saber Spencer

Perfect muffler for 21 Tundra 5.7. It has the correct inlet and outlet to match the factory pipes. When idling, the sound is almost standard, when accelerating it has a pleasantly powerful sound, like a muscle car. Not annoying or pushy. No roar at highway speeds. If you want an adult muffler this is perfect, if you want one that will scream and annoy the crowd this isn't it. Save a ton of money and get this instead of client customization. The muffler shop charged me $180 to have it installed and welded to my factory configuration.