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GFB DV+ Upgrade Diverter / Recirc Valve - Vauxhall Adam 1.4 S Product Type_Intake System Order today and transform yourEuropean manufacturers are pushing their engines to the limit. Get a DV to match. GFB's DV+ diverter valve range offers a direct fit performance solution for the weak factory diverter valves used on many modern vehicles. By retaining the factory ECU control and recirculating the vented air, the DV+ is a purely performance orientated product. GFBs DV+ design solves the longevity and boost leaking issues that are common with factory diverter valves, and