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FEATURED+129 HP
2023 Audi RS6 Avant - Twin Turbo V8 Wagon 750WHP
2023 Audi RS6 Avant (Performance)
About This Build
The ultimate sleeper wagon. The RS6 Avant twin-turbo 4.0T V8 responds incredibly to ECU tuning. HEX Tuning Stage 1 ECU and TCU flash adds over 100hp from just software - the factory turbos have massive headroom. Eventuri carbon intake feeds both turbos cleaner air. Wagner intercoolers prevent heat soak during Autobahn runs. Milltek non-resonated cat-back gives it a menacing V8 bark when you want it but valved mode keeps it quiet for school runs. 750whp grocery getter that gaps supercars.
Performance Comparison
Factory
HP621
TQ627
Modified
HP750
TQ740
+129
HP Gain
+113
TQ Gain
Modifications
HEX Tuning Stage 1 ECU Tune ($2500), HEX Tuning TCU Flash ($1200), Eventuri Carbon Fiber Intake System ($1800), Wagner Tuning Competition Intercooler ($1500), Milltek Non-Resonated Cat-Back Exhaust ($1500)
Build Stats
Total Cost$8,500
Published3/2/2026