Flowmaster, Inc.

Delta Force® Race Technology Explained

It has taken years of hard scientific research at Flowmasters R&D facilities and teamwork with leading race engine builders, top race teams at all levels of motorsports and at racetracks all around the world, to develop Flowmaster's patented race technology. Delta Flow® race technology provides superior scavenging of exhaust gases even over a comparable (standard) Flowmaster muffler. By using multiple deflectors, vs. a single deflector, Delta Flow technology provides a cleaner faster scavenging path by eliminating the chance of turbulence commonly found behind a single deflector model. By using the pressure and sound energy released from an engine's combustion chamber, our designs use the energy to scavenge, or pull, spent gases out of each cylinder more efficiently than even an open pipe system.

This improved removal of exhaust gases out of the cylinders promotes a more efficient charge of unburned fuel and air to fill the cylinder for the next cycle. The result is improved power, as the engine has a purer mixture to burn, and improved fuel economy as less fuel is now required to achieve the same level of performance.

But it's not just the performance gains that make Flowmaster mufflers unique, it's the sound they produce. Our rich exhaust sound is created by Flowmaster's patented noise cancellation system, where exhaust sound energy is split and directed through slightly different paths. Where the paths merge, the two parts of the sound energy are out of phase creating noise cancellation, much as two ripples colliding in a pond absorbing each others energy.

Scavenger D-Port Technology

Flowmasters unique patented Scavenger series collectors and cross-over pipes are founded on the principle of PULSE technology. Engines do not work like flow benches by blowing a constant stream of cold air. With an opening point and a closing point of the valves, engines have pulses (a start and an end) of heat, gases and sound frequencies traveling down the exhaust pipes. The large "D-shaped" ports provide a larger surface area for the exhaust pulses to scavenge or pull each other along as they travel the length of the collector. This provides a stronger faster signal resulting in an increased torque curve throughout the RPM range.

OUTLAW Technology Explained

By using sound expansion rings inside the muffler, a low pressure area is created behind each ring helping to accelerate pulses and reducing sound energy as it passes each ring. The result is an increase in torque while taking the edge off of open header applications.

Methanol/Alcohol Technology Explained

Since a large amount of un-burned methanol fuel makes its way into the exhaust system and puddles in the low pressure areas of the muffler, burn holes are strategically placed in Methanol/ALC. muffler. This results in a constant flame in those low pressure areas preventing the fuel from igniting and causing a "mini-explosion" when the flame is sucked back into the muffler upon deceleration.