Pro Hoses Boost Hose Kit Upgrade for Focus Mk3 ST 250Apart from making my Engine bay look great and making it stand out from the crowd, why do I need a upgraded boost kit? This kit was designed with the vehicle in house and this gave us as better design route, than main improvement was making the 3 piece intake hose (Intercooler to Inlet manifold) into 1 piece, this removed a big restriction in the standard hoses allowing a smoother flow for the charge Air and increasing flow = better driveability. On