Noise muffler

Tenneco Automotive has introduced the Walker NoiseBraker, a truck muffler designed to quiet heavy-duty vehicle exhaust and engine-brake noise, while increasing engine efficiency. At the heart of the NoiseBraker muffler is a high-flow sound tuning system that filters out noise created by the engine and engine brake. The system features dual concentric Helmhotz tuners combined with fiberglass roving

June 1, 2001

Tenneco Automotive has introduced the Walker NoiseBraker, a truck muffler designed to quiet heavy-duty vehicle exhaust and engine-brake noise, while increasing engine efficiency.

At the heart of the NoiseBraker muffler is a high-flow sound tuning system that filters out noise created by the engine and engine brake. The system features dual concentric Helmhotz tuners combined with fiberglass roving to retard noise over a wide range of frequencies without restricting exhaust flow. Under engine brake-induced deceleration, the NoiseBraker is two to four decibels quieter than the industry's best OE mufflers, according to Tenneco.

The NoiseBraker also uses straight-through exhaust routing to reduce system backpressure by more than 60% over conventional mufflers.

Go to www.tenneco-automotivehd.com or circle 309 on card.