At Burns Stainless, we’ve always believed that power is not just about raw displacement or sheer noise—it’s about control. Velocity Controlling Technology (VcT) is a core principle behind our exhaust systems, designed to harness exhaust gas dynamics in a way that maximizes horsepower, torque, and throttle response.
The Science of Velocity
Exhaust gases leaving an engine don’t just drift out like steam from a kettle. They move in high-energy pulses, carrying pressure waves that can either fight against or assist cylinder scavenging. The key is velocity: Gasses moving too slowly and you get reversion (spent gases flowing back into the combustion chamber). Force them out too quickly without control, and you risk losing mid-range torque. VCT balances this equation.
Burns Stainless Approach
Our systems are engineered with carefully calculated tube diameters, lengths, and merge collectors that use velocity to our advantage. Our proprietary X-Design Exhaust Modeling Program was created just for this result. By fine-tuning these dimensions, X-Design helps create a scavenging effect—pulling fresh air-fuel mixture into the cylinder while evacuating the exhaust. This process boosts efficiency across the rev range, giving racers sharper throttle response on track and builders a proven path to real-world gains.
For example, our merge collectors are not just tubes of welded steel. They’re precision-designed angles and cone components that accelerate gases smoothly, reduce turbulence, and maintain optimal flow velocities. Likewise, our NHB (No Holds Barred) Harley exhaust systems for M8 baggers apply VCT principles to deliver championship-winning performance in the Bagger Racing League and Harley Drag Racers.
Why It Matters
Velocity Controlling Technology is what separates Burns Stainless from “louder pipes” on the market. It’s the reason our exhausts perform as good as they look—and why champions trust our designs. By controlling exhaust velocity, we give builders and racers the edge they need to stay ahead, lap after lap.
