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APR 1.8 TSI/TFSI EA888 Gen 3 ECU Upgrade
APR is pleased to present the ultimate engine control unit (ECU) upgrade for the 1.8T EA888 Gen 3 engine. APR’s ECU upgrade is available in octane-specific variations and is conveniently flashed to the vehicle’s factory ECU through the OBD-II port without any physical modification to the factory ECU.
Stage I and II ECU Upgrades
The APR Stage I ECU Upgrade is designed to work without requiring other changes to the vehicle’s hardware. With the ECU Upgrade alone, APR’s team measured higher peak figures of 288 ft-lbs of torque and 252 horsepower with 98 RON fuel. APR's Stage II requires a high flow downpipe, power figures grew further to 262 HP and 316 FT-LBS of torque with an additional 80 FT-LBS of torque and 71 HP over stock!
- ECU Upgrades
- A1 (8X)
- A5, S5 & RS5 B8
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APR's ECU Upgrade is developed to work within the OEM and Tier 1 Supplier specifications for engine component stress tolerances and performance specs

The APR Badge Comes in two sizes, Small and Large. The K04 is currently only available in the larger size.