To many a racing enthusiast, hearing the roar of their engine alone is an exhilarating experience in and of itself. Mostly transmitted through the exhaust system of the vehicle, this roar can become very loud – so loud, in fact, that many small circuits have imposed sound limits for the sake of their spectators as well as the drivers. Thusly, mufflers were created to lessen the volume. However, these mostly inhibited exhaust outflow while they blocked sound. These mufflers thereby affected engine performance negatively – until Ray Flugger, founder of Flowmaster performance exhaust, created a muffler that improved exhaust gas outflow while producing great sound.
With years invested in research and development, Flugger created the Power Chamber – a chamber within the muffler which builds negative pressure for sucking out waste gases out of the exhaust system. With the engine exhaling more easily, it was able to produce more horsepower and torque. In fact, Flowmaster Mufflers improve performance so much as to be credited for many circuit successes up to this day.
While the original and subsequent models of Flowmaster Mufflers also kept the tones racers love at allowable levels, the company continually improved upon the design so far as to develop and create the most finely-tuned muffler in the world: the Delta Force race muffler with Delta Flow Technology.

How fine-tuned is this muffler? To be able to answer this question, we must first describe its components and their respective functions. Firstly, it features a Resonant Tuning Chamber that captures and negates specific sound frequencies. This decreases the resonance that can permeate the interior of the vehicle. Secondly, its Low Pressure Balance Chamber prevents atmospheric pressure from entering the exhaust system and robbing the engine of power. Thirdly, Delta Flow Technology augments sound control with advanced noise cancellation. It accomplishes this by separating and recombining pulses at precise phase shifts. This Technology also improves upon the Power Chamber design by using multiple deflectors instead of just one. These deflectors reduce exhaust turbulence even further, and thereby provide faster and more complete elimination of exhaust gases. This ultimately results in unmatched increases in horsepower, torque, and fuel economy.
However, all of these performance improvements come at a steep price: the deflectors must be placed precisely upon exact specifications. This is where the fine-tuning comes in. Every component of the Delta Flow muffler is set by a Precision Construction Electronic Sensor to a tolerance of +/-0.004 inches. This means that every piece in the actual product will only differ from its design in terms of placement by only 0.004 inches! OEM manufacturers only require specifications that are half as tight, yet Flowmaster’s dedication to its craft now enables it to accomplish the tightest specifications in the industry.
All of this means that Flowmaster is committed to winning as much as every serious racer. This is why Flowmaster remains to be the top choice among racers and racing enthusiasts alike. Just like how the engine roar thrills the spirit, the cheers and applause of victory invigorate it even more.