CSF Core design - Rolled Tube & Billet End Tanks The CSF intercooler for the C8 RS6 & RS7 is a larger, more efficient intercooler for significantly improved cooling power. PWRs rolled tube cores are optimised in PWRs in-house wind tunnel, through this process PWR select the optimum stack height and multi-louvred fin design for both the ambient and pressure sides for optimum balance between cooling power and pressure drop. OE CSF Number of tubes 22 45 Tube height 7mm 3mm Fin height 7mm 4.85mm End-tanks to core connection Core crimped onto plastic end-tank with gasket Core and end-tank TIG-welded Benefits Eliminates heat soak Lowers charge air temperatures Eliminates end-tank failure at elevates boost levels VF Engineering saw ≈ +20 whp + 18wtq increase on a stage 1 tune VF Engineering saw ≈ +10 whp + 20tq increase on a stage 2 tune Features Formula-1 Performance Grade Core by PWR (2-Row Core Featuring Rolled Tubes w/ Inner Fins) 45 Tubes vs. OEM 22 3mm Rolled Tube vs. OEM 7mm 4.85mm Fin Height vs. OEM 7mm CNC Machined Billet End Tanks 100% TIG-Welded vs. OEM Style Gasket and Crimped Plastic End Tanks for Maximum Durability in High Boost Applications OEM Style CNC Machined Inlet/Outlet Connections for Precise Fitment with All OEM Components Highly Engineered, Lightweight Design True Plug-and-Play “Drop-in Fit” Installation Made in the USA at PWR North America CSF Manufacturing, Testing & Finish These intercoolers are manufactured PWRs North American factory, this means PWR has total control over our production, unlike other white-label brands. PWR’s intercoolers start life in their factory as an aluminium sheet or bar and from there they create their own rolled tubes, multi-louvred fins, CNC machine all of the fittings. The core is then CAB brazed in their state of the art clean room and the end-tanks and fittings TIG welded together by their master welders. All of PWR’s intercoolers are individually leak tested and go through a fitment inspection to ensure critical dimensions are per CSF's design. To finish the intercoolers are only available in a raw finish. OEM part number: 4K0 145 805 P (Left) & 4K0 145 806 B (Right) Compatible models: 2020+ Audi C8 RS6/RS7
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