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The GFB Deceptor Pro II 25mm blow‑off valve gives in‑car control over how much air is vented versus recirculated, letting you adjust the classic BOV sound on the fly. It uses GFB’s Venting Bias Adjustment System with remote electronic control to vary venting ratio and can be configured to limit maximum atmospheric venting to avoid backfiring or stalling. Wiring loom included; manufactured in Australia.
GFB Deceptor Pro II Blow Off Valve - 25mm Inlet/25mm Outlet
