This bizarre-looking design is actually a type of Tesla valve, which is typically used to control the flow of liquids—not ...

NASCAR will test a raft of potential updates this weekend for its troubled Next Gen stock car. Among them will be the addition of exhaust mufflers, which NASCAR is considering using for races in big ...

A question often asked is: Which muffler is better, Magnaflow or Flowmaster? Both exhaust brands have been around since the early 1980s, both have the word "flow" in their names, and both brands have ...

Put mufflers on a 1300hp big-block Chevy, and most enthusiasts would guarantee that you'd choke the horsepower down. But the test of Borla's new 4½-inch Shoot-Out Series muffler revealed that ...

AVONDALE, Ariz. — The cars sounded better than they felt during NASCAR's two-day test session at Phoenix Raceway. NASCAR invited six drivers to participate in the test to try to improve the ...

For years, European car manufacturers have had to comply with strict EU laws on sound levels for production models. A great deal of time and effort is spent to develop suitably subdued exhaust systems ...