4.5 of pure carbon power. Presenting the S - FLO Carbon Intake Suite for the Audi 8V RS3 and Mk3 TT RSS - FLO Closed Carbon Intake System The S - FLO Closed Carbon Intake System combines each component of the S - FLO suite and adds a bespoke carbon air box. Spanning the entire width of the grille, the S - FLO Closed Carbon Intake is capable of collecting all of the ram air from the front of the vehicle to feed it into the S - FLO Filter.Thanks to the 2x2 carbon fiber construction, heat soak is subdued during hard driving while the increase in air box volume ensures the 2.5T never runs scarce of cold air. The S - FLO Closed Carbon Intake System unlocks 17 hp and 6 lb - ft of torque at the wheels, and is capable of handling any higher - than - stock boost level thrown at it. S - FLO 4 Coupler The S - FLO Carbon Inlet Tube, Shortie Carbon Intake, and OpenClosed S - FLO Carbon Intake Systems come complete with a 4.5 to 3 couplers to mate to the factory 3 turbo inlet pipe. The S - FLO 4 Coupler transitions from 4.5 to 4 to accommodate aftermarket turbo inlet pipes that are 4 in diameter and is available separately (SKU 7260 - 11002). DV Adapter Kit The DV Adapter Kit is a an adapter machined in - house out of billet 6061 aluminum for 2019 models. The kit includes the DV adapter, two oil resistant o - rings, two worm - drive clamps, and 8.75 of high temp silicone hose. Important Notes 2019 models require the additional DV Adapter KitThe AWE 4.5 S - FLO Carbon Intake Suite is for racing use only