DynoMax uses a patented process called Forstadt Inside/Outside Bend to manufacture the internal perforated tube on Ultra Flo mufflers. This process prevents tube distortion and results in maximum ...

We recently had the opportunity to test DynoMax's Super Turbo, Ultra Flo, and Ultra Flo Welded (formerly Race Magnum) mufflers against each other in sound quality, price, and performance.

After hearing a DynoMax Ultra Flo system on a modular GT, we decided to outfit his car with a quality exhaust that fits right and sounds sweet.

The new muffler-engineered to deliver the DynoMax's trademark "Drone-Free Performance"-offers the flow characteristics of the legendary DynoMax Ultra Flo welded muffler, through a straight-through ...