Unitronic software for the Audi RS3 will transform your vehicle from quick to supercar performance! Available in multiple stages and power levels, they offer something for every power goal. Stage 1 - Calibrated for a stock vehicle using pump gas - Estimated power gains of 76 HP & 115 FT LB of torque - No additional hardware is required - 476 HP & 479 TQ Stage 1+ - Calibrated for a stock vehicle using 93 octane fuel or E85 - 505 HP & 496 TQ on 93 octane - 592 HP and 528 TQ on E85 - Required hardware: - Spark plugs (NGK or Brisk) - Upgraded turbo inlet pipe - Stage 1 DSG tune is recommended Stage 2 - For vehicles running upgraded hardware on stock turbo - 510 HP & 490 TQ on 91 octane - 554 HP & 527 TQ on 93 octane - 621 HP & 564 TQ on E85 - Required hardware: - Spark plugs (NGK or Brisk) - Upgraded turbo inlet pipe - Upgraded downpipe - Upgraded intercooler - Upgraded intake - Upgraded injectors - Upgraded midpipes - Stage 2 DSG tune is recommended Stage 3 - For vehicles running an upgraded turbo - 548 HP & 513 TQ on 91 octane - 652 HP & 564 TQ on 93 octane - 764 HP & 587 TQ on E85 - Required hardware: - Stage 2 hardware - TTE700 Turbocharger - Upgraded MAP sensors - Iroz Low Pressure Fuel Pump - Stage 2 or 3 DSG tune is recommended Stage 3+ - For built engine vehicles - Turbos supported include TTE700, TTE777, IMS710H and IMS780H - Please contact us for help planning your build at these power levels - Stage 3 DSG tune is recommended Add the Uniconnect+ cable in order to flash your ECU & TCU at home. This is required for customers who are not local to our shop.