A turbo inlet hose is a great way to add performance to any turbocharged platform and enhance the effects of a high flow intake system. Because of the tight engine bay clearances in the Mazdaspeed3, the stock turbo inlet hose incorporates inconsistent diameters, sharp bends and corrugated interior surfaces- all of which impede can airflow and choke performance. To combat this common problem, the engineers at Cobb have developed full silicone turbo inlet is designed to incorporate a smooth, even diameter through the entire intake path, eliminating the sudden neck-down reductions and tight bends, yet it still fits snugly into the stock inlet location. While vacuum collapse may be a concern on lesser designs, the Cobb has incorporated a rigid frame into the inlet interior which will prevent collapse while allowing flex between the intake and engine. This direct factory replacement turbo inlet so it can be used with any aftermarket intake system or even the stock airbox, so you won't have to worry about compatibility or fitment issues. The Cobb Tuning silicone turbo inlet hose includes all hardware and is available in Cobb blue or stealth black.