CTS Turbo is proud to announce our high flow turbo inlet for B9 Audi S4/S5The biggest issue with the restrictive factory inlet is apparent when you start to increase the power. Our engineers designed the turbo inlet to be as large as possible; yet still fit perfectly. This was accomplished using the latest in 3D scanning and rapid prototyping technology.The larger inlet will provide increased flow to the turbo and make sure the engine has all the air that it needs to operate at maximum capacity!Features:High flow cast aluminum turbo inlet pipePrecision machined fitment for the factory turboFactory-style PCV connectionsDeveloped, tested and machined in-houseIncludes new o-ring and allen head bolts for easy installDownload Installation Guide