HPA's 4.0T Performance Program

HPA's performance program for the 4.0TFSI leverages our past 28 years of knowledge with building and tuning the VR6 and 2.0T platforms. The 4.0L BiTurbo TFSI engine was co developed by Bently and has wide application in Audi's product line - found in the S6, S7, A8/S8, and RS7. With stock power ranging from 420HP 406ftlbs in the S6 to an impressive 560HP 516ftlbs in the RS7, the 4.0 TFSI has proven headroom and potential for power upgrades. Paired with an upgraded downpipe, tune, fuel, and cooling, this hardware package is capapble of over 750HP / 715ft-lbs.


We are proud to announce our hardware performance upgrades for your 4.0TSI equipped S6/S7 or A8. The factory RS7 turbos provide a significant jump in performance, and when paired with an upgraded downpipe, tune, and cooling can deliver upwards of 700HP. This is a direct fit housing and cartridge replacement and will save you money compared to buying the complete turbos from Audi.