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Wastegates

Power without control isn't performance. It's dangerous. The wastegate is a critical component of GReddy's total power system. Our precision, premium-crafted wastegates help ensure maximum power, flexibility, responsiveness and safety. Modern turbocharging systems work. Thousands of cars, trucks and race cars attest to that. The turbocharger's proven performance and durability have made it the choice of companies as diverseas Nissan, Mazda, Buick, Porsche, Toyota, Saab, Volvo and others. A turbocharging system, however, is only as good as its components. This is especially important when fitting a turbocharger to a normally aspirated, late-model engine. The modern power-train is a marvel of mechanical, computer and electrical engineering. Power-per-displacement, smoothness and sophistication, reliability, emissionssensitivity–even fuel economy–are designed in and aggressively managed. The payoff: a superb driving experience and ample power

When selecting a turbocharging system, the last thing the enthusiast wants is to take a step backward by using "any" piece! The wastegate is commonly a spring-loaded valve fitted just before the turbine. The valve opens and bleeds off excess exhaust pressure when the compressor reaches a predetermined boost. The wastegate performs three jobs: Controls boost to keep the engine intact Controls the speed of the turbo to keep it from self-destructing Helps tailor the turbocharger's performance to the requirements of the engine But consider the "working environment," and you'll understand why wastegate technology and quality are an investment. Heat. A wastegate must withstand brutal heat. A highly modified engine can generate over 900C/1652F-on the street! At that extreme, standard metals can melt. GReddy Performance Products wastegates are made of high quality stainless steel and ductile cast iron that can withstand temperatures exceeding 950C/1742F. Boost control. As good as stock wastegates are, our engineers have found that some aren't precise enough or properly sized. A wastegate that permits boost to fluctuate between 12 and 16 psi when the target is exactly 14 psi simply isn't delivering maximum power and engine protection all the time. We've seen some of these "leakers" dump too soon and the pressure drops drastically. The turbo has to play "catch up." GReddy's CNC-machined wastegates never "waste" exhaust-gas energy. Our Type S wastegates are designed for street/performance applications. They're ideal for smaller engines (1.6 to 2.0 liters) and smaller turbocharger applications. The Type R is for larger-capacity turbos and engines in the 300 HP-plus range. The Type C is ideal for "highly motivated" vehicles of between 400 and 1000 HP.