AUDI RS3 TTRS 2.5T Stage 1 Turbochargers Compressor wheel upgrade to 58/71mm 9 blades The exhaust efficiency is improved without changing the size of the turbine，So customers can choose to buy only enough super cores! The super core can perfectly match the original turbine housing. The new turbine wheel flows 20-38% more than pre-upgrade and has peak efficiency of 76%. This turbo supports up to 580 horsepower. Forged fully-machined compressor wheel and new aerodynamics increase maximum horsepower output and boost response. The wastegate flapper is made of K418 super alloy and is capable of handling exhaust gas temperatures up to 1050 degrees C. Turbine housings are made from stainless steel to provide ultimate durability and temperature resistance up 1050 degrees C. Cast with original material stainless steel 1.4848 310s. Performance results of this product are highly dependent upon your vehicle’s modifications and tuning/calibration.