A performance turbo inlet hose is a great modification to improve air flow and minimize chances of air leaks from your stock inlet. Its full silicone construction makes it immune to heat soak and guarantees a smooth internal passageway, unlike the stock corrugated rubber inlet found on your stock Subaru. This allows for more intake air, ultimately creating better throttle response and more power. These hoses are 5 ply (thicker than competitors piping) preventing any possible risk of collapse. The 2.4" hose will fit the stock turbo with ease and all necessary fittings are included making installation a breeze.