do88 proudly presents our in-house developed turbo inlet hoses for the Porsche 991.1 / 991.2 Turbo! - The hoses are larger than the original ones, which lets them flow a full 31% more (50% with the upgrade turbochargers); see the diagram below the product images. - At their narrowest point the hoses are 2.5" (63 mm). - Smooth bends and transitions for optimal flow. - A very smooth inner surface for optimal flow. - Very good thermal properties; they do not transfer heat from the engine bay. - The hoses are reinforced with stainless steel wire so they can cope with very high power outputs without collapsing. Developing improved turbo inlet hoses for the 991 Turbo was a real challenge. Space is completely lacking, which makes it very difficult to fit a larger inlet hose. To succeed we had to make minor compromises: the hoses do not have clearance everywhere, so in some places they rest against non-sensitive surfaces. Porsche 911 turbo. This immortal icon. The quintessence of the car world's cars, the Porsche 911, squared – with a turbocharger. Could it get any better for a true car enthusiast? Rewarding through a sweeping bend, vicious in pouring rain, pulling hard in a full-throttle run, breathtaking under braking. Owning a Porsche is so much more than merely owning a car. A Porsche is a Porsche. You travel in the very image of something immortal, and you have never felt more alive. Owning a Porsche is about enjoying it to the full. Everything should be as refined and as optimised as it can possibly be. This is where do88 comes in. Our in-house developed intake hoses increase air flow by 31% (50% with the upgrade turbochargers). It is a difference that is genuinely felt in the car! With considerably better throttle response across the whole range, this is an upgrade that refines the experience of a Porsche 991 turbo. It becomes what it ought to be. It is a difference that has to be experienced! The kit contains everything needed for installation: 4 wire-reinforced silicone hoses 2 silicone hoses 2 CNC-machined VTG adapters 2 valves for the crankcase ventilation Hose clamps and screws Detailed fitting instructions Note! From July 2026 no new Jet-Pump valve is included. The original valve must therefore be reused. See step 36 of the fitting instructions.