IE Performance ECU Tunes For Audi B9/B9.5 2.9T RS5 & RS4

Unlock the performance potential of your Audi with the Integrated Engineering (iE) Performance ECU Tune, designed for compatible Audi B9/B9.5 RS5 and RS4 2.9T models. Developed to enhance the factory engine calibration, the iE tuning suite delivers stronger acceleration, sharper throttle response, and increased power while maintaining refined drivability for everyday use.

Engineered through extensive development and real-world testing, iE ECU tuning is designed to deliver smooth, consistent power without abrupt delivery or unpredictable behavior. With the appropriate tune stage and supporting hardware, compatible Audi RS models can achieve up to 604 HP and 660 ft-lbs of torque, according to iE's advertised performance figures.

Advanced Engine Protection with AutoProtect™

The iE tuning suite incorporates AutoProtect™ safety logic, which continuously monitors critical engine operating conditions and can reduce power when potentially unsafe conditions are detected. This additional protection is designed to support consistent operation under demanding driving conditions, although it cannot eliminate the risk of mechanical failure.

Customizable Exhaust Sound and Driving Experience

The iE tuning platform offers adjustable exhaust crackles and burbles, allowing drivers to customize the sound during deceleration and gear changes. Supported exhaust flap controls let you adjust exhaust behavior through the iE app or compatible CarPlay interface.

The tune also offers 15 adjustable throttle-response settings, ranging from smooth, progressive response to a sharper, more immediate pedal feel. Supported features can be controlled through the iE app, CarPlay, widgets, and Siri, depending on device and software compatibility.

Anti-Lag and Rolling Anti-Lag

For performance-focused applications, compatible iE calibrations offer Anti-Lag and Rolling Anti-Lag™ (RAL) features designed to build or maintain boost for more immediate acceleration. Launch RPM adjustments are available through supported app, cruise-control stalk, or CarPlay controls.

These features are intended for appropriate performance use and should only be used where safe and legally permitted. Availability depends on the vehicle configuration and selected calibration.

TrueFlex™ Ethanol Tuning

With the compatible iE TrueFlex™ Kit and an eligible tune package, drivers can use supported ethanol blends, including 91/93-octane pump gasoline and E85. The system monitors ethanol content and adjusts supported engine calibration parameters to match the fuel in the tank, reducing the need for manual reflashing when switching between compatible fuel blends.

TrueFlex availability depends on the selected tuning package, required hardware, and vehicle compatibility.

Key Features

• Brand: Integrated Engineering (iE)

• Product: Performance ECU Tune

• Vehicle Platform: Audi B9/B9.5 RS5 and RS4

• Engine Application: 2.9T twin-turbocharged V6

• Maximum Advertised Output: Up to 604 HP and 660 ft-lbs of torque, depending on tune stage and supporting hardware

• Stage 1 calibration supports up to 542 HP on 91- or 93-octane fuel, according to iE.

• Stage 2 calibration is designed to maximize performance from the compatible factory turbochargers.

• AutoProtect™ engine safety logic.

• Adjustable exhaust crackles and burbles.

• Supported exhaust flap control.

• 15 customizable throttle-response settings.

• Compatible Anti-Lag and Rolling Anti-Lag™ features, where supported.

• Adjustable launch RPM through supported controls.

• CarPlay, widgets, and Siri integration for supported adjustable features.

• TrueFlex™ ethanol tuning support with the required kit and eligible tune package.

• ECU flashing through the iE POWERlink Tuner and mobile app.

• Designed for compatible street-driven and performance-oriented Audi RS builds.

Performance Build Guide

Stage 1 – ECU Tune

The Stage 1 calibration is designed to increase performance without requiring the full set of Stage 2 hardware upgrades.

• Advertised Output: Up to 542 HP on 91- or 93-octane fuel, according to iE.

• Required Tuning: iE Stage 1 CORE ECU Tune or an eligible PRO/APEX package.

• Supporting Hardware: Factory hardware may be retained where supported by the calibration.

• Optional Upgrade: An intake can support airflow and enhance turbocharger sound.

• Package Availability: Included with eligible CORE, PRO, and APEX packages.

Eligible PRO or APEX packages may provide access to additional TrueFlex ethanol tuning options, subject to the required hardware and software.

Stage 2 – ECU Tune

Stage 2 is designed to maximize performance from compatible factory turbochargers with supporting airflow and cooling upgrades.

• Required Hardware: Compatible downpipes, intake, and upgraded intercooler.

• Additional Fueling Upgrade: An upgraded high-pressure fuel pump (HPFP) can support configurations advertised for up to 604 HP when paired with the appropriate calibration.

• Package Availability: Included with eligible PRO and APEX packages.

• Performance Goal: Increased airflow, improved charge-air cooling, and stronger acceleration across the powerband.

Important: The advertised power figures depend on the exact vehicle, fuel, tune package, and installed hardware. Confirm the required HPFP specification and applicable calibration with iE before ordering.

Technical Specifications

• Manufacturer: Integrated Engineering (iE)

• Product Type: Engine Control Unit (ECU) Performance Tune

• Vehicle Platform: Audi B9/B9.5 RS5 and RS4

• Engine: 2.9L twin-turbocharged V6

• Tuning Interface: iE POWERlink Tuner and mobile app

• Available Tune Stages: Stage 1 and Stage 2, depending on package

• Fuel Options: 91/93-octane gasoline and compatible ethanol blends with eligible TrueFlex configurations

• Maximum Advertised Output: Up to 604 HP and 660 ft-lbs of torque with the applicable tune and supporting hardware

• Engine Protection: AutoProtect™

• Adjustable Features: Throttle response, exhaust sound, and supported launch controls

• Transmission Compatibility: Confirm support for the exact vehicle and transmission software before purchase

Fitment

Audi RS5 2.9T – B9/B9.5

Audi RS4 2.9T – B9/B9.5

Fitment Note: Exact model-year coverage was not provided in the supplied product information. Confirm your vehicle's model year, engine control software, market specification, transmission configuration, and selected iE tuning package before ordering. Do not assume compatibility with other Audi 2.9T or 3.0T models unless explicitly confirmed by Integrated Engineering.

Installation & Compatibility Notes

• Requires a compatible iE POWERlink Tuner and the appropriate iE tuning package.

• Follow the manufacturer's instructions for ECU flashing through the iE mobile app.

• Verify that the selected tune stage matches the installed intake, intercooler, downpipes, and fueling hardware.

• An upgraded HPFP may be required for higher-output configurations.

• TrueFlex ethanol tuning requires the compatible TrueFlex Kit and an eligible tune package.

• Confirm compatibility with your vehicle's ECU software and transmission configuration before flashing.

• Use fuel that meets the requirements of the selected calibration.

• ECU tuning and aggressive performance features can increase mechanical stress and affect emissions compliance, warranty coverage, and component service life.

• Anti-Lag and Rolling Anti-Lag should only be used in appropriate conditions and where legally permitted.

• Professional installation and calibration support are recommended for modified vehicles.