Unleash the True Potential of Your Audi RS3 (8Y) and Cupra Formentor VZ5. We’re thrilled to introduce APR’s Engine Control Unit (ECU) Upgrades for the powerful 2.5 TFSI EA855 EVO engine found in the Audi RS3 (8Y) and Cupra Formentor VZ5! With up to 550 HP and 511 FT-LBS of torque, this upgrade transforms your car into a performance powerhouse, delivering exhilarating power and unmatched driving excitement.
Power. Precision. Protection. Our new ECU software is the result of months of meticulous engineering and real-world testing, far surpassing the typical aftermarket solution. By equipping our development vehicles with high-speed data loggers, turbo shaft speed sensors, thermocouples, and other precision instruments, we fine-tuned hundreds of parameters and corrected countless protection models across multiple octanes to achieve flawless performance, enhanced safety, and unmatched reliability. We’re so confident in its reliability that we even offer an optional factory term-limit matching limited powertrain warranty with APR Plus!
Overview
APR’s ECU Upgrades for the 2.5 TFSI EA855 EVO engine in the Audi RS3 (8Y) and Cupra Formentor VZ5 deliver up to 550 HP and 511 FT-LBS, with gains of up to +153 AWHP and +141 AWFT-LBS over stock. Race-proven features such as brake boosting and speed limiter removal sit alongside advanced safety routines that keep the engine protected.
Power. Precision. Protection.
APR developed this software on instrumented vehicles using high-speed data loggers, turbo shaft speed sensors and thermocouples, fine-tuning hundreds of parameters and correcting protection models across multiple fuel grades. The result is more output with enhanced safety and reliability, backed by an optional factory term-limit matching limited powertrain warranty with APR Plus.
Performance without compromise
Safety routines correct modelled sensor data inside the ECU and enable new protection strategies: turbocharger shaft-speed and overspin limits, exhaust backpressure and pressure-ratio monitoring, low-speed pre-ignition (LSPI) protection, thermal management that reduces power until oil reaches temperature, and fuel system limits.
Enhanced driving experience
The exhaust valves open fully above 3,000 RPM for sound and power delivery, a light factory-style crackle is calibrated, and the standing rev limiter is raised to 5,500 RPM with valves open and crackle in park. Left-foot braking and brake boosting add control, Auto Start/Stop memory keeps your preferred setting, and the boost, power and torque gauges are recalibrated for the higher output.
Features
Power Gains
Up to 550 HP / 511 FT-LBS (+153 AWHP / +141 AWFT-LBS) with Stage 2 on E85.
Seven Fuel Grades
91, 93, 96, 98, 100 and 104 AKI plus E60–E85 ethanol tunes, with no hardware required for the ethanol file.
Stage Structure
Specific tunes for stock hardware (Stage 1) and for APR intake and intercooler setups (Stage 2).
APR Plus Warranty
A 91 AKI Stage 1 with an optional factory-matching limited powertrain warranty.
Sound & Control
Enhanced exhaust crackle with open valves, raised standing RPM limiter, speed limiter removal, Auto Start/Stop memory, left-foot brake boosting and linear throttle mapping.
Protection & Updates
LSPI and knock protection, thermal management, turbo and fuel system protection, free lifetime updates and support for most bolt-on mods.
ECU unlock. RS3 8Y ECUs (MG1CS163) need an unlock before performance software can be installed. APR supports a mail-in unlock from Autotuner as well as its own ECU swap through the APR dealer network; an unlocked ECU can take any new APR update, stage or fuel grade without another unlock.
Stages & Dyno Results
Stage 1
Works with the factory turbocharger. Up to 524 HP / 506 FT-LBS (+119 AWHP / +135 AWFT-LBS) over stock on E60–E85.
Stage 2 (intake & intercooler)
Works with the factory turbocharger plus an APR intake and APR intercooler. Up to 550 HP / 511 FT-LBS (+153 AWHP / +141 AWFT-LBS).

Stage 1 vs stock, 93 AKI

Stage 2 vs stock, 93 AKI
APR Calibration Report stock vs every stage and fuel grade
Power and torque are the figures APR reports for each fuel grade; the gain columns are measured at the wheels against stock.
Stock
Apr Plus
Stage 1
Stage 2 With Intake And Intercooler
Use only fuel equal to or higher than the grade specified, never lower. Dyno results are for reference only and vary with vehicle condition, setup, dyno type, environment and fuel quality. North America uses the Anti-Knock Index (AKI); the rest of the world uses RON.
Vehicle Compatibility
What’s Included
- 1x APR Performance ECU Upgrade (software)
Availability & Shipping
In stock and ships from a US warehouse. Standard Shipping applies to every order — rates are calculated at checkout. Some items may require additional processing time depending on the specific product and current demand. Track your order any time at eurospeed.co/pages/track for a live delivery estimate.
International orders ship via Economy International, with delivery typically 6–18 business days depending on destination and customs.
Delivery time depends on the product. Most in-stock parts ship within days, while carbon fiber and made-to-order items may require production time before they ship. For the specific timeline on any item, check the Availability & Shipping section on that product’s own page — the guide below covers our general shipping types.
Shipping Overview
Depending on the item, free air freight may be available for select carbon fiber components, with estimated shipping around 1–2 weeks after dispatch. Larger hoods, oversized body components, and certain made-to-order items may require sea freight and longer delivery windows. If timing is important, please contact us at support@eurospeed.co before placing your order.
Shipping Coverage
EuroSpeed ships to customers across the United States and internationally. Shipping is included in the price of eligible products for your convenience and covers the initial cost of delivery to your destination.
Import duties, taxes, clearance fees, or customs charges required by your destination country are not included and remain the recipient’s responsibility.
Order Processing & Fulfillment
Every order is reviewed, processed, and prepared before shipment. Most in-stock products are processed within 1–3 business days, though some orders may take up to 5 business days depending on fulfillment location, product type, order volume, or courier pickup timing.
EuroSpeed stocks select high-demand products at our U.S. facility and international fulfillment centers. Because our catalog includes many vehicle-specific and specialty parts, not every product is held in-house at all times.
Some orders may ship through our trusted fulfillment network, which may include verified manufacturing partners, authorized distributors, regional warehouses, and international fulfillment centers.
- Orders may ship from a U.S. warehouse, international warehouse, manufacturer, or authorized fulfillment partner.
- Some products may require additional handling, processing, production, or quality-check time before shipment.
- Orders enter fulfillment shortly after being placed and may no longer be eligible for cancellation once processing, production, or shipment preparation begins.
Custom, Made-To-Order & Oversized Items
Custom, made-to-order, and oversized product categories may include carbon fiber steering wheels, hoods, trunk lids, fenders, front lips, splitters, side skirts, diffusers, bumpers, body kits, widebody components, select spoilers, rear wings, and other large carbon fiber components.
Many carbon fiber items are made to order. Some products may already be stocked and ready to dispatch when available, but if inventory is unavailable, your purchase reserves the next available production slot instead of waiting for a separate restock listing.
Production time: Production can take 1–4 weeks depending on product type, selected options, finish, current queue, and quality-control timing.
Shipping time: Shipping can take 2–10 weeks depending on item size, freight method, destination, customs processing, carrier delays, warehouse transfers, and final delivery location. Carbon fiber steering wheels typically ship faster, with shipping usually taking 3–7 business days after dispatch.
By purchasing custom, made-to-order, or oversized items, you acknowledge and accept the extended production, fulfillment, and shipping timelines associated with these products.
Tracking Updates & Delays
All orders receive a tracking number once generated by the courier. Tracking may take 2–3 business days after dispatch to show movement in the courier’s system.
Certain international, oversized, or freight shipments may show limited updates during transfer between fulfillment locations, warehouses, customs, or final-mile carriers. In some cases, tracking is provided or begins updating once the item reaches a regional warehouse, local carrier, or final delivery network.
Shipping timelines are estimates and are not guaranteed. Delays caused by high order volume, weather conditions, customs inspections, carrier disruptions, production queues, warehouse transfers, holidays, or other external factors may occur and are outside of EuroSpeed’s direct control. These delays do not qualify for cancellations or refunds unless the carrier officially marks the package as lost.
Delivery Responsibility
Upon delivery, carefully inspect the item for visible defects or damage before signing for it. If the item is damaged or not as expected, do not accept the package. Once a damaged or defective product is accepted, EuroSpeed cannot cover return shipping costs.
EuroSpeed is not liable for packages marked as delivered by the carrier. If a package is lost, stolen, or missing after being marked as delivered, the customer must file a claim directly with the shipping carrier. Our team will assist with available documentation when needed.
Shipping addresses typically cannot be changed once an order has been marked as shipped. If an address change is possible through the carrier, any carrier redirect, correction, or address-change fee will be the customer’s responsibility.
Please ensure your shipping address is entered correctly at checkout. Orders shipped to incorrectly provided addresses are the customer’s responsibility. EuroSpeed is not responsible for failed deliveries, additional shipping costs, lost packages, or refunds caused by incorrect shipping information, failure to accept delivery, or failure to collect a package from the post office or carrier pickup location within the required time frame.
Customs, Duties & Import Fees
EuroSpeed’s free shipping policy does not include import fees, taxes, duties, clearance charges, or other fees required by your destination country. These charges are the responsibility of the recipient, and EuroSpeed is not responsible for any duties or taxes requested by local customs.
Most shipments clear customs automatically through the shipping provider. However, if additional information is needed to complete the process, our team will assist where possible to help ensure a smooth resolution.
If customs clearance fails and the item is returned or destroyed:
- EuroSpeed reserves the right to deny refund claims.
- Returned items may incur return shipping fees, which will be deducted from any eligible refund.
- Items deemed too costly to return may be destroyed, and no refund will be issued if this occurs.
Package Protection
For added peace of mind, EuroSpeed offers ShipInsure package protection as an optional service at checkout. When selected, this service provides coverage for lost or damaged packages. EuroSpeed is not responsible for shipping delays, lost packages, or damaged items if purchase protection is not selected during checkout.
- Protects against lost or damaged packages.
- Must be selected at checkout.
- Not all oversized body kit purchases are eligible. Please contact us before ordering if custom insurance arrangements are needed.
To file a claim, please visit our Claims Center.
- Claims must be filed within 14 days of delivery.
- Packages stuck in transit for 14 days are considered lost.
- Damage claims typically require photo evidence.
- A 2-day buffer after delivery may apply before lost or stolen claims can proceed.
- Police reports may be required for orders over $500 or where fraud is suspected.
- “Damaged” means the item is broken and unusable.
Questions?
For questions about your order, shipping timeline, customs clearance, or delivery status, please contact our team at support@eurospeed.co. We’re here to help.
Product Installation & Use Disclaimer
EuroSpeed is not liable for any damages, injuries, fitment issues, installation issues, or vehicle-related problems resulting from the installation, modification, misuse, or use of our products.
Products should be installed carefully and used only as intended. For complex installations, electrical components, performance parts, body components, or products requiring modification, professional installation is recommended to help ensure proper fitment, function, and safety.
Any damage caused by improper installation, misuse, modification, or failure to follow installation requirements is the sole responsibility of the customer. By purchasing, installing, or using this product, you acknowledge and accept all associated risks.