Defiance provides unique combinations of high temperature gas furnaces with state-of-the-art durability simulation test equipment. Temperatures of 3000°F at flow rates up to 500 cfm over a range of backpressure allow thermal environment duplication of heat-affected components. Dynamic real time load simulation capabilities combined with our unique heat generation ability produces a powerful tool in the study of powertrain and exhaust systems and components that are affected by exhaust system heat. As a leader in the automotive test field Defiance was the first company to combine high temperature, flow and real-time simulation to create a single laboratory test to evaluate an entire exhaust system.