GFB
Focus RS Blow off Valve
Please Note:
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GFB Blow off Valve to suit the MK3 Focus RS.
The factory diverter valve typically operates in only two states – either fully open, or fully closed. When it opens at low boost, or during a partial throttle lift mid-corner, it causes increased lag and a noticeably non-linear boost transition, which is noticeable as a distinct “step” down in power as you roll off the throttle and the valve opens.
The VTA however allows the piston to open and close progressively in response to the amount of boost pressure present, so it only vents enough air to prevent compressor surge (the primary purpose of a diverter or blow off valve). This helps to smooth out boost transitions, making the throttle response more linear and predictable, and also minimizes lag introduced by the factory diverter valve.
No claims are made with regard to the legality of using any parts supplied by Cherry Tuning Pty. Ltd.
Parts are supplied for off-road use only and it is the responsibility of the customer to confirm with their local government regarding the legality of installing any parts for road use.