Manufactured and marketed by Tenneco Inc., the NoiseBraker is a low-cost, direct retrofit for class 7 and 8 vehicles, capable of reducing backpressure and quieting the engine brake to legal limits. Featuring a straight-through, ultra-high flow design to reduce engine backpressure by as much as 60 percent, the NoiseBraker improves engine efficiency as compared to traditional heavy-duty muffler designs. Other engine brake silencers channel exhaust flow through a series of baffles and restrictor tubes, thereby increasing backpressure and reducing engine efficiency.
