Silicone Boost Hose Set Silver Fits 07-09 Porsche 997 Turbo Agency PowerAs the horsepower on your 997 Turbo increases, so does the need for preventative products to ensure your boost is holding strong. The stock boost hoses are much like a rubber brake line that expands outwards under pressure. This causes a loss in boost pressure and can sometimes relate to the hose blowing off the turbo or Y Pipe leaving you stranded. Because the Agency Power Silicone Boost Hoses are made from 4ply silicone with CNC machined 6061