NO CORPORATE FILTER

Your B9 A4 & A5 isn’t slow. Audi’s factory programming is holding it back. This iE tune safely reprograms the engine computer, stripping away those limits and replacing them with a new, unchained personality. Experience savage acceleration and custom-coded performance tech that makes your A4 & A5 unhinged when you want it, and civil when you don’t.

GAIN UP TO 314 HP

iE B9 A4 Tuning offers gains of up to 314 HP on stock turbo. Unlike inferior tunes, we deliver power without spikes, twitchy hesitation, or clunky surprises. Acceleration pulls hard, throttle response is exact, and driving behavior is perfected for everyday use. Sophisticated when cruising. Brutal when you floor it.

FAST, NOT RECKLESS

This isn’t a rushed, custom dyno file or a conservative one-size-fits-all tune. iE calibrations are developed over months and validated across real cars, climates, and driving conditions worldwide. Advanced safety logic and AutoProtect intelligent programming continuously monitor each cylinder and pull power instantly if something isn’t right. You get massive power and torque from a tune that dials it back when you need it most.

FULL POWER, NO EXCUSES

All 2021+ and some 2019-2020 A4 & A5 transmission computers are locked. While most tuners reduce output or force “low-torque files,” iE wrote custom engine ecu code to force the transmission to safely accept more torque. This custom code increases hydraulic pressures to increase clutch capacity without a transmission tune. Full power, no compromises.

BUILD GUIDE

Your path from stock to the ultimate A4 or A5.

STAGE 1

Add up to +52 hp with nothing more than a Stage 1 ECU Tune, engineered to reprogram your stock engine for maximum gains on 91 or 93 octane. Pair with an intake for improved airflow and aggressive turbo sound. Available for 2017-2020 A4 & A5, the iE Transmission Tune transforms how the car shifts, accelerates, and delivers power, delivering a complete drivetrain performance upgrade.

FAST CARS DESERVE FAST SHIFTS

Your iE tuned Audi A4 or A5 delivers the gains. The iE TCU Tune puts that power down. By synchronizing shift behavior, torque delivery, and RPM limits to perfectly align with iE Stage 1, 2, and 3 engine tunes, the drivetrain works as one. Faster shifts. Smarter gear selection. Stronger acceleration. A driving experience that feels sharper, more responsive, and fully dialed.

SHIFT LIKE YOU MEAN IT

Fast cars deserve fast shifts. The factory calibration is built for comfort and a smooth ride - characteristics that deliver early shifts, delayed response, and gear hunting when pushed. iE TCU tuning fixes that by rewriting shift logic, increasing clutch pressure, and removing torque limits. The result is fast, decisive shifts that hit exactly when you expect them and stay locked under power. No confusion. No slip. No clunks. Just smooth, fast, and precise shifts that keep you pulling hard through every gear.

CONFIDENCE IN EVERY SHIFT

We don’t rush it, we safeguard it. iE TCU tunes are developed over months and validated across real cars and real driving conditions worldwide. Every change is shaped by driver feedback and proven where it matters most. Clutch pressures are carefully increased and controlled to prevent slip without overstressing components, while advanced safety logic reduces power if temperatures climb too high. Fast, precise shifts. Full power when you want it. Protection when you need it.

BUILT FOR EVERY DRIVE

Unlike tunes that just raise RPM and speed up shifts, iE TCU tuning completely reworks how your transmission behaves in any scenario. Shift points are smarter when you push it and smoother when you don’t. Reduced take-off lag gets you moving quicker, while the gear display keeps you informed in both drive and sport modes. Upshifts and downshifts land exactly where they should. So good, you’ll forget it’s even there.

HITS DIFFERENT

Flat out, no lift. AMAX keeps both clutches engaged during shifts, so power never drops between gears. From launch to redline, acceleration stays uninterrupted and keeps pulling. Push through the kickdown switch while building launch control to unleash the full attack. Faster, harder acceleration on demand where other tunes lift off. This is your unfair advantage.

TCU GUIDE

STAGE 1 & 2

Running an iE Stage 1 or Stage 2 ECU tune? The iE Stage 1 TCU Tune unlocks faster shifts, improved acceleration, a 6800 RPM limit, and full power delivery. Perfect your iE Tuned stock turbo A4 with a fully dialed performance drivetrain.

FITMENT NOTES

• 2021 and newer cars are updated EA888 Gen 4 engines and are not covered by this tuning suite. Please reach out to support to confirm fitment.
• Some 2019 and 2020 cars have a newer transmission DL382G2 - these can be tuned on the engine side but transmission tuning support is currently not available
• Compatible with Quattro models only - incompatible with front-wheel-drive (FWD) vehicles.

Installation

Use the POWERlink Tuner and mobile app to retune your engine and unleash its full power.