The Audi B9 A4 Stage 1 tune installs at home using the iE POWERlink V4 mobile flashing device. Connect to the OBD2 port and complete the EA888 Gen 3 longitudinal ECU upgrade directly from your iPhone or Android. No laptop, no ECU removal, no dealer visit required.

The iE B9 A4 performance tune increases output from the factory 252 HP to up to 424 HP, depending on fuel and hardware. These Audi B9 2.0T HP gains deliver stronger mid-range torque and significantly improved acceleration.

Most 2021+ and some 2019–2020 models have a locked transmission computer. Our Audi B9 A4 Stage 1 tune includes custom torque management, allowing full advertised power without a B9 TCU unlock. If unlockable, adding the DSG tune improves shift speed and drivability.

Yes. Our EA888 Gen 3 longitudinal tune is engineered for smooth, proportional power delivery. AutoProtect continuously monitors engine conditions and actively reduces power if unsafe activity is detected, maintaining reliable daily performance.

No. iE’s adjustable features are coded directly into the ECU. There are no external modules, pedal boxes, or add-on controllers required. All changes are made live through the POWERlink app and apply instantly.

Yes. The B9 A4 E85 flex fuel tune is available with iE TrueFlex hardware and fueling upgrades. The ECU automatically adjusts for ethanol content in real time, allowing you to run 91, 93, or full E85 without reflashing.

Our calibrations are optimized for performance, but many drivers report stock-like or even improved fuel economy during normal cruising. Increased efficiency in boost and ignition mapping can improve MPG when driving conservatively. Aggressive driving will always use more fuel.

No. POWERlink Pro and Apex Suites include all supported files within your tier. Upgrade hardware and flash the appropriate file — no additional software purchases required.

Yes. Audi B9 A4 mobile flashing is done entirely through the iE POWERlink app. This eliminates laptops and dealer visits while giving you full control from your phone.

It comes down to control, refinement, and technology. Many off-the-shelf tunes are conservative and locked. Custom tuning often requires weeks of revisions with limited feature support. iE POWERlink delivers professional-grade calibration, advanced safety systems, and in-runtime adjustable features you control instantly from your phone. It’s not just a tune. It’s a live ECU platform.

iE B9 A4 Apex Tier, Stage 3 Map Pack Engine Tune and Stage 3 TCU Tune are mandatory to run this turbo safely and correctly on your Longitudinal EA888 Gen 3. For hardware, you will need the iE/TurboSystems Turbocharger, upgraded air intake, 5 Bar map sensors, intercooler, and VW Golf R injector upgrade (X4 injectors VW PN: 06K906036N and X4 injector clips VW PN: 06J133036F).

See iE Stage 3 Map Pack for more info.