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When it comes to horsepower mods, MAPerformance knows a thing or two. That's why we've designed a Fiesta ST BOV Block off the plate that will allow for the removal of the compressor-mounted factory diverter valve. But why, you ask?
Plugging and sealing the factory Fiesta ST diverter valve will set you up for future mods, including the mounting of a new, higher volume/higher pressure BOV elsewhere in the charge pipe system. When making any kind of performance-enhancing mod, you should always consider upgrading the BOV/BPV, and this is even more true with the Fiesta ST. Not only is the factory placement unstable for increased boost, but you'll also risk ruining the weak, brittle little BOV.
