The APR Stage 1 ECU Upgrade is the first step towards tuning your engine. It produces up to 488-550 HP and 537-606 FT-LBS of torque with gains as high as +75-129 HP and +89-168 FT-LBS of torque at the wheels.

Apr 14, 2021 · APR Stage 1+ ECU Upgrade is now available for the B9 RS4 and RS5 2.9 TFSI EA839 V6! This update includes all of the new updates available in the recent v1.3 update, including enhanced launch control, driveline protection, and cold start, while adding support for the new APR High Pressure Fuel Pump (HPFP).

Jun 9, 2020 · The APR Stage 1 tune can void the Audi powertrain warranty, but you can buy APR plus stage 1 ECU tune to get the APR powertrain warranty. https://www.goaprplus.com/ APR Plus Limited Powertrain Warranty

Apr 22, 2024 · I had the Stage 1 TCU tune briefly as it is included with the ECU tune, but does not add much and behaves like the stock transmission. If you are going to get a 034 TCU tune, get Stage 2. The only thing about the 034 TCU Stage 2 tune that could be better is how it handles up-shifts in Sport before the oil is up to temperature.

Aug 23, 2008 · We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Audi RS5 (B9) 2.9 TFSI engine with the Bosch MG1 ECU! Expect massive gains with 488-550 HP and 537-606 FT-LBS of torque on tap, depending on octane, from this simple software upgrade.

APR Stage 1+ ECU Upgrade For Audi RS5 - 2.9T EA839 V6 (B9) E85 . APR's ECU Upgrades are the best dollar-per-horsepower modification one can make to improve engine performance. The upgrades dramatically increase horsepower and torque, making for an exceptionally quicker and more exciting vehicle.

APR Stg 1 93 Oct = 520 AWTQ / 438 AWHP (for what should be a relatively safe & reliable tune, hopefully) on a stock RS5 seems solid to me considering their baseline of 428 AWTQ / 389 AWHP. (figs from their "Power & Torque at the Wheels" graph)

The APR Stage I ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 488-550 HP with 537-606 FT-LBS of torque depending on fuel grade.

On the Ethanol program power increases to 550HP and 569 Lb-ft of torque with peak gains of 104 horsepower and 123 Lb-ft of torque! Expect improved throttle response and a smoother, more powerful top end with no loss of drivability or reliability.

The APR Stage 1 ECU Upgrade is the first step towards tuning your engine. It produces up to 455-466 HP and 329-335 FT-LBS of torque. APR Stage 1 is available for 91 AKI, 93 AKI, and 100 AKI in North America, and 95 RON, 93 RON, and 104 RON in the rest of the world.