The Audi A4 Diverter Valve maintains the efficiency of the turbo and safeguards the elements of emissions by diverting the pressurized air quickly when driving conditions vary. The Audi Diverter Valve is known to be a rock-solid design with a reinforced diaphragm and heat-resistant housing that can endure thousands of boost cycles, and therefore drivers do not have to worry about warning lights or lost power. On petrol and diesel models of the Audi A4 that go back to the B6 chassis and extend to updated longitudinal engine platform, this clever component is installed between the compressor and the intake track and opens as soon as the throttle is pushed to close. The Diverter Valve allows the trapped boost to circulate, keeping the turbo rotating, balancing the air-fuel mixture, and eliminating the jolting surge that may cause stress on engine hardware. When it is coasting or starting in cold conditions, it also releases excess flow of the secondary air pump, which protects the catalytic converter against backfire and prevents heat soak in plastic piping, which is a safety advantage frequently ignored. The Audi unit fits with the same pattern of gasket whether with front-wheel drive or Quattro all-wheel grip, sedan or Avant bodywork, and as a result changing the gasket is easy in the majority of the A4 trim levels. There are two types of factory designs, which are a full recirculation type, coveted for smooth sensor readings, and a blow-off type, which has a sharper audible hiss but has the same internal spring calibration that brings constant control of pressure. Since it combines emission compliance with performance increase, the Diverter Valve is a unique small but conclusive performance improvement to fuel economy, throttle response, and long-term durability for any loyal Audi fan.
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