The solenoid coil itself from the factory-fitted valve is great- the ECU opens it faster than any pneumatic valve so why replace it? The weak point however, is the valve mechanism itself. GFB's DV+ solves this problem by replacing the valve parts with an anodised billet aluminium housing, fitted with a brass piston machined to exacting tolerances. This item is in the category "Vehicle Parts & Accessories\Car & Truck Parts & Accessories\Air & Fuel Delivery\Turbos, Superchargers & Intercoolers\Turbos & Parts". The seller is "shiftperformanceparts" and is located in this country: AU.This item can be shipped worldwide.