Fiesta ST Blow Off Valves & Wastegates
There’s something unique and exhilarating about driving a turbocharged vehicle such as the Ford Fiesta ST. The turbocharger lets you have the best of both worlds. You can enjoy the benefits of an economic fuel-efficient engine while you commute to work during the week, but then light it up on the weekend during a spirited track race. The turbocharged engine can provide boost when needed, but what happens to that boost when you let off the gas, and the need suddenly disappears? How is that boost pressure safely stored while being readily available on demand?
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Blow Off Valves & Wastegates
Protecting Your Fiesta ST With a Quality Blow Off ValveThere are a few vital parts in the Fiesta ST that protect your engine and keep this system functioning properly. One part is the Ford Fiesta blow off valve.
If you begin to accelerate and then suddenly let off the gas, pressure inside the intake manifold needs a place to go. Without a Fiesta ST blow off valve or bypass valve, that pressure would go back into the turbo, slowing the compressor wheel down. If this occurred, the next time you stepped back on the throttle, it would take some time to get full power back, also known as turbo lag.
A blow off valve safely dissipates that pressure, protecting your turbo while enhancing and accentuating that turbo spool sound. If you’re planning on increasing power output in your Fiesta ST, it’s a good idea to upgrade to a quality Fiesta ST blow off valve.
Factory bypass valves are typically made of plastic and use un-reinforced diaphragms that can crack under increased boost. A quality aftermarket Fiesta ST blow off valve, on the other hand, is constructed of billet aluminum and uses quality O-ring sealed pistons. A premium Fiesta ST blow off valve will be capable of handling over 30 psi boost. Protect your Fiesta ST with a quality constructed blow off valve for better boost response, improved boost handling and a more aggressive sound.
Don’t Forget the WastegateWhile the blow off valve regulates pressure on the intake side, the wastegate regulates pressure on the exhaust side. When pressure reaches a certain PSI, the Fiesta ST wastegate opens up to let exhaust gases out. The wastegate regulates how much boost pressure the turbo will put into the motor. Upgrade your Fiesta ST wastegate to a quality aftermarket wastegate for more stable boost control, improved boost response and a flatter boost curve in the top end.
If you love driving your Ford Fiesta ST, it’s important to protect your turbocharged EcoBoost engine. Enhance and protect your ride with a premium aftermarket Fiesta ST blow off valve and Fiesta ST wastegate from CJ Pony Parts.