Looking at the stock y design in front of the throttle body, we new there was improvements to be made.
This throttle body is the same size as the Cayenne tt throttle body we use on our 996tt and 997tt upgrade kits. The stock y-pipe is a 2 piece plastic y design that is smooth on the inside with a "deflector" internally to channel air. The bad part about the stock one is it goes from a 78mm id at the throttle body down to a approximately 51mm diameter y split. This then connects to rubber boost hoses that expand under pressure. Both of these are a power robber! If you retain the stock design and stock diameter hoses, you cannot gain power no matter if the ypipe is cast aluminum or plastic. This is why we m...(choose a part on the right to read more)
As 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 aluminum ends, they will never pop off. The property of the silicone also keeps it at a fixed circumference as the silicone will not expand.
The new agency power Porsche 997 turbo boost hoses are sold as a set of 4 to replace your 2 top hoses off the y-pipe to the int...(choose a part on the right to read more)