APR 2020+ Audi S8 (D5) 4.0 TFSI (EA825) ECU Upgrades!

By: APR | 01/11/2022 < Back to Blog Home
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We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Audi S8 (D5) 4.0 TFSI engine with the Bosch MG1 ECU! Expect massive gains with up to 685-767 HP and 731-804 FT-LBS of torque on tap, depending on octane, from this simple software upgrade.

APR 2020+ Audi S8 (D5) 4.0 TFSI (EA825) ECU Upgrades!

  • Delivers up to 685-767 HP with 731-804 FT-LBS depending on octane
  • Max gains of +128-222 AWHP and +165-245 AWFT-LBS depending on octane
  • Supports 91 AKI, 93 AKI, 100 AKI, and 104 AKI fuel grades
  • Optional factory term limit matching limited powertrain warranty with APR Plus
  • Quicker acceleration
  • Speed limiter removed
  • Standing RPM soft limiter increased
  • Left-foot braking / brake boosting added
  • Properly rescaled performance gauges
  • Optimized thermal management and protection
  • Optimized launch control strategy for faster response
  • Optimized driveline protection during launch
  • No hardware required (Software only)
  • Supports standard bolt on modifications
  • Eliminated the need for a TCU upgrade to achieve full torque
  • Free lifetime updates
  • Direct OBDII port flash (No ECU removal)
  • 30 day money back guarantee
APR 2020+ Audi S8 (D5) 4.0 TFSI (EA825) ECU Upgrades!
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