Choose Between The Following SKU's Above: IESOVZ21, IESOVZ22.
IE's 2.9T ECU upgrade dramatically increases horsepower, torque, engine response, power delivery, and more to release the full performance potential from your 2018-2023 Audi RS5 or RS4! Multiple stages are available to match typical bolt-ons and offer various fuel options and features while maintaining stock comfort and reliability. Enjoy a hassle-free install in minutes through the vehicle's OBD-II port, and get ready for supercar power from your RS-class Audi!
Add Up To: +148HP Over Stock!
Add Up To: +175 Ft-Lbs Torque Over Stock!
Transform your Audi and flash at home in minutes.
Ethanol is rocket fuel for your daily driver. Our TrueFlex flex fuel conversion kit upgrades the factory engine computer to read and instantly adapt to any ethanol blend, unleashing huge power.
Ethanol fuels are included and unlock the most performance potential from our ECU tunes. Ethanol contains tons of oxygen, burns cooler, and has a high resistance to knock. This provides more horsepower and torque than running conventional gasoline and is much less expensive than race gas.
IE calibrators have maximized stock turbos and extracted full power potential on Stage 1 tunes without needing downpipe upgrades. Stage 2 and 2 Plus tunes are calibrated for aftermarket downpipes but will produce the same power as Stage 1 and Stage 1 Plus ECU tunes.
Stage/Fuel |
Horsepower |
Torque |
Stock |
444 HP |
443 Ft-Lbs |
Stage 1 & 2 91 Octane |
502 HP |
565 Ft-Lbs |
Stage 1 & 2 93 Octane |
522 HP |
575 Ft-Lbs |
Stage 1 & 2 E85 |
542 HP |
581 Ft-Lbs |
Stage 1 & 2 Plus E85 |
604 HP |
660 Ft-Lbs |