TAG Motorsports is pleased to offer the APR ECU Upgrade for the 2018-2024 Audi S4 / S5 / S5 Sportback / SQ5 and 2021-2024 SQ5 Sportback 3.0T EA839 (B9).

We're excited to announce our Engine Control Unit (ECU) Upgrades are now available for the Audi S4, S5, and SQ5 3.0T EA829 engine with the Bosch MG1 ECU! Expect massive gains with up to 411-620 HP with 551-629 FT-LBS of torque on tap, depending on stage and octane.

Features:

• Delivers up to 411 HP with 551 FT-LBS (APR Plus)
• Delivers up to 411-491 HP with 551-629 FT-LBS depending on octane (APR Stage 1)
• Delivers up to 529-620 HP with 554-622 FT-LBS depending on octane (APR Stage 3)
• Max gains of +103 AWHP and +190 AWFT-LBS (APR Plus)
• Max gains of +103-171 AWHP and +190-249 AWFT-LBS depending on octane
• Supports 91 AKI, 93 AKI, 100 AKI, 104 AKI, and E60-E85 fuel grades (APR Stage 1 & 3)
• Max gains of +172-171 AWHP and +255-263 AWFT-LBS depending on octane (APR Stage 3)
• Optional factory term limit matching limited powertrain warranty with APR Plus
• Standing RPM soft limiter increased
• Left-foot braking / brake boosting added
• Properly rescaled performance gauges
• Optimized launch control strategy for faster response and boost building
• Optimized driveline protection during launch
• Optimized thermal management and additional protection
• Optimized exhaust crackle temperature safeties
• Optimized high-gear LSPI protection and turbocharger protection added
• Optimized the factory volumetric efficiency low end torque fluctuation
• Speed limiter removed
• Increased rev limiter for use with TCU upgrades
• Exhaust flaps recalibrated to provide better performance and increase sound during free-rev
• Auto start-stop defaults to the off position
• No hardware required (Software only)
• Supports standard bolt on modifications to further increase outpu
• Eliminated the need for a TCU upgrade to achieve full torque
• Turbo loyalty program gives APR ECU customers free access Stage 3 software with the purchase of our turbo system
• Flash counter does not increase with each flash
• Free lifetime updates
• Direct OBDII port flash (No ECU removal)
• 30 day money back guarantee

Installation: DIY install at home with an APR UltraLink (sold separately), or have it installed at TAG Motorsports or any authorized APR dealer. Note: the tune is purchased during the install.

Fits: 2018-2024 Audi S4 / S5 / S5 Sportback / SQ5 and 2021-2024 SQ5 Sportback 3.0T EA839 (B9)

APR part number: ECU-30T-EA839-B9

About TAG:

TAG Motorsports is proud to be an APR dealer, selling to customers worldwide. We are also an APR installer and service center, serving customers in Southern California.