The APR Stage I ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 175 HP with 249 FT-LBS of torque. Gains as high as 38 HP and 62 FT-LBS of torque are available throughout the power band, making the vehicle exceptionally quicker in all scenarios. For those looking for a more modest bump torque with the same peak horsepower figures, a lower output file is available. To get more power, the vehicle can be outfitted with an upgraded intake, catback exhaust, or other minor bolt on modifications without requiring any new modification to the ECU. Read More
The upgrade is offered in high, medium and low torque versions, and is available for various fuel grades. The high torque upgrade requires, and the medium torque upgrade may require an upgraded clutch or APR’s TCU Upgrade to avoid clutch slip, so low torque software is available, offering an impressive 367 FT-LBs of torque.
An upgraded intake is required to meet the advertised low and medium output power figures, and an upgraded intercooler is required to meet the high output power figures. No ECU modification is necessary to run an upgraded catback exhaust system, or other small engine modifications. APR recommends using colder heat-range spark plugs (Ex: NGK-R7437-9), properly gapped to a tighter gap …
For the past several months, our engineers have meticulously tested and tuned the new 2.5 TFSI found in the Audi RS3 Sedan and TTRS. This has included hundreds of dyno pulls, over 40 passes at the drag strip and more than 50 laps around Road Atlanta. You can read more about our testing and instrumentation here: APR RS3 Sedan Testing and Tuning Update!
We visited our local drag strip, Montgomery Motorsport Park, to test the factory software vs our development software for the 2.5 TFSI found in our RS3 Sedan. In terms of engine / performance hardware, we tested our software only, leaving items such as the intake, exhaust, intercooler, fueling and more completely stock. The vehicle was equipped with Toyo R888 tires for added grip. Please Note: Date/Time stamps are 55 minutes ahead of the actual time.
First, we ran the stock tune on 93 octane, full weight (DA: ~600 FT):
Next, we flashed the ECU to our development Stage 1 tune on 93 octane, full weight (DA ~800 FT):
The 2.5 TFSI found in the brand new TTRS and facelifted RS3 sedan is a totally new 5-cylinder engine from Audi including an all new version of Bosch’s MED17.1.62 engine management system. The engine differs from other 5 cylinders in the past, using a brand new turbo, with a new control strategy, new dual injection system and new engine block material among other changes. We’re in uncharted territories tuning this new amazing platform!
With any new project that vastly differs from others in the past, our engineers take a cautious and thorough approach to tuning the engine. This starts with data collection. Our APR ECU Explorer logging tool give us direct access to the entire ECU. That means we can read every sensor within the engine bay, and every single calculation taking place within the ECU, at extremely high data rates. This data resolution is second to none, leaving our tuners with the ability to see everything as it happens, with the ability to trace back to why it happened within the ECU. This allows our engineers to understand the ECU algorithms and strategies better than the competition. This is contrary to others relying on OBDII diagnostic channels, which gives poor …
APR Roll-Control Lowering Springs are designed to improve handling while delivering a stylish visual upgrade to the vehicle. This simple, yet effective upgrade lowers the vehicle’s center of gravity, giving it an attractive new stance, while remaining fully compatible with the OEM dampers. In doing so, body roll is reduced and handling improves without sacrificing ride quality or greatly impacting the life of the OEM dampers. Each spring is manufactured using premium material and the latest high-end techniques to ensure they resist sagging, and withstand harsh track conditions for years to come. Read More
APR Roll-Control Stabilizer Bars are designed to improve corner handling without diminishing ride quality. This simple, yet effective upgrade reduces cornering load differentials between your vehicle’s inner and outer wheels during cornering. In doing so they improve the vehicle’s under and oversteer balance, giving the vehicle greater stability and control, with increased grip. Each bar is manufactured using the latest high-end techniques to offer a strong, weldless design capable of withstanding harsh track conditions. Read More
The APR 2.0T EA888 Gen 3 Crate Engine is the ultimate solution for strength and longevity on high horsepower builds. Each engine is sold as a fully assembled long block from the cylinder head to the oil pan, or as a short block only. You supply a core, and we do the rest! Learn More
APR is pleased to present a full tuning suite for the new Supercharged 3.0 TFSI Gen 2 (Simos 16) equipped A6, A7 and A8 in North America, and the A4, A5, S4, S5, A6, A7 and A8 in the rest of the world!
APR Stage 1 ECU Upgrade
The APR Stage 1 ECU Upgrade is the first step towards making more power! This simple upgrade requires no engine hardware modifications, and produces 447-478 HP with 379-399 FT-LBS of torque.
The APR Coolant Performance System (CPS) is a massive front-mounted cooler upgrade that dramatically reduces intake air temperature (IAT), minimizes heat soak, and provides increased performance! It is 140% larger than stock and features a self-bleeding cooling circuit to ensure it is always operating at peak performance. The system is easy to maintain and fully integrated into the factory cooling circuit. This upgrade is highly recommended at every stage! Now available for the 3.0T / 4.0T found in the B8/B8.5 A4/A5/S4/S5/Q5/SQ5 and C7/C7.5 A6/A7/S6/S7. Read More
Notice: Products that affect emissions and do not carry a California Air Resources Board Executive Order are not for sale in California, USA. While we try to keep everything current, APR LLC is not responsible for errors in pricing on this web site. All prices are in USD and are applicable to the United States of America only.