What Are Exhaust Flaps Used For?
Exhaust Flaps are used in variable exhaust systems to control exhaust gas flow and sound levels. By opening or closing a valve within the exhaust system, they allow drivers to switch between a quieter and a more aggressive exhaust note.
Mostly, we began seeing exhaust flaps become popular in the late 2000's, but you you wouldn't always see them on regular commuter cars like Corollas or Accords. It was reserved for more premium packages and higher performing sports cars and luxury cars with bigger engines and therefore louder exhaust systems. The biggest selling point of these flaps was the combination of comfort and performance.
With the flap closed, exhaust gases are routed through the muffler system for reduced noise. When opened, the exhaust can flow through a less restrictive path, creating a louder and more sporty exhaust sound.
Exhaust Flaps are popular in street-driven performance cars, track-day vehicles, and custom exhaust systems where adjustable sound levels are desired. They were harder to find and more of an eye-catching feature back in the day, but now they are available in the aftermarket for anyone interested!
Why Would I Want Exhaust Flaps in My Exhaust System?
An Exhaust Flap gives you greater control over your vehicle's sound characteristics without permanently committing to a loud exhaust system.
Many enthusiasts want a sprty exhaust note during spirited driving while maintaining a quieter, less drone-heavy setup for daily driving, long-distance trips, or residential areas. An Exhaust Flap allows you to switch between these modes whenever needed.
In some applications, an exhaust bypass valve can also help reduce exhaust restriction, depending on the design of the exhaust system. This makes Exhaust Flaps a popular upgrade for vehicles that require flexibility.
How Do I Control an Exhaust Flap?
Exhaust Flaps can be controlled using either vacuum-operated or electronic systems. Vacuum-controlled systems use engine vacuum together with a vacuum actuator to open or close the valve. These systems are simple, reliable, and commonly used in motorsport and aftermarket applications.
Electronic systems typically use an electric actuator or servo motor that can be controlled via a switch, remote control, ECU, or dedicated control module. If you're looking for that, then you're in luck, because BOOST Products also offers remote-control systems for vacuum-operated exhaust valves, allowing convenient control from inside the vehicle.
Why Are BOOST Products Exhaust Flaps Better Than Others?
BOOST Products Exhaust Flaps are designed with durability, precision, and long-term reliability in mind.
BOOST Products Exhaust Flaps feature high-temperature ceramic bearings.
Unlike cheap alternatives using plastic bearing components, ceramic bearings provide smoother operation and significantly improved durability under extreme exhaust temperatures.
The valve housings are engineered with integrated beads simplifying welding and giving seamless internal transition when used with standard exhaust tubing. Adjustable actuator linkage allows fine-tuned flexibility for individual installations.
Every component is manufactured with a focus on precision and stability, making BOOST Products Exhaust Flaps a trusted choice for custom exhaust systems, motorsport applications, and high-performance street vehicles.
