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.

• 424 HP DONE RIGHT Built and validated to perform anywhere you drive, then guarded by AutoProtect, our smart, automated engine protection system. Hard-hitting power is protected at all times.
• INSTANT TUNE ADJUSTMENT Adjust crackles, launch RPM, throttle response, and more in real time. No reflashing. No hardware. Every tap delivers the driving experience you want.
• FULL POWER, NO UNLOCK Even with the transmission computer locked, you still get full power. iE’s custom torque management code keeps the engine and gearbox working together, unlocking maximum output without a transmission flash.
• PROPER LAUNCH MODE Factory low-RPM launch control just revs the engine. iE anti-lag launch builds real boost for tire-shredding launches, while Rolling Anti-Lag unleashes instant power from a roll.
• ETHANOL MADE SIMPLE Running ethanol in your tuned A4 & A5 unlocks massive power, but mixing and measuring is a hassle. iE TrueFlex solves that by adapting automatically to any ethanol blend. Just fill and go.
• EASY MOBILE FLASHING POWERlink Mobile lets you install and manage your tune suite wirelessly via our intuitive and effortless iPhone/Android mobile app. Meet the tuning guru in your pocket.

GAIN UP TO 424 HP
iE B9 A4 Tuning offers gains of up to 424 HP with hybrid turbo, or 378 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.

CUSTOMIZE YOUR SOUND
Turn on Exhaust Crackles to give your Audi A4 attitude with dramatic pops and burbles on decel and shifts. Make instant changes from the app to turn it up, tone it down, or switch it off in real time. Kill the drone or free the beast by controlling your exhaust flaps from the app. The sound you want, exactly when you want it.

NEVER WAIT ON BOOST
Other launch controls only build RPM, then fall straight into lag. iE Anti-Lag Launch Control builds RPM and spools the turbo, jumping you into the lead with hard-hitting, boosted launches. Rolling Anti-Lag (RAL) delivers the same advantage while moving, preloading boost at speed for a lag-free rolling launch. Stay one step ahead with instant RPM adjustments from the app or your cruise control stalk.

ADJUSTABLE THROTTLE RESPONSE
Take command with 15 customizable settings ranging from calm and linear to sharp and immediate. Changes apply instantly from the app, so you can switch from economy to aggressive the moment you want it. One tune, multiple personalities. No expensive pedal control module needed.

TRUEFLEX: E85 MADE EASY
Ethanol is like rocket fuel for your B9 A4, but using it shouldn’t feel like a science project. iE TrueFlex adds real flex-fuel intelligence, reading ethanol content and instantly optimizing boost, timing, and power to safely deliver maximum performance for the exact fuel in your tank. 91/93 pump gasoline, full E85, or any blend in between–. just fill and drive.

BUILD GUIDE - Your path from stock to the ultimate A4, A5, or Q5
STAGE 1 — START HERE
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.
INCLUDED WITH CORE, PRO, & APEX

STAGE 2 — TURN IT UP
To safely maximize the stock turbo, you’ll need an intake, intercooler, and downpipe. Reflash to Stage 2 and boost climbs to 378 hp. Increased airflow and cooling keep power consistent while acceleration pulls harder across the powerband. Pair with a catback exhaust to fully enjoy adjustable crackles.
REQUIRES PRO OR APEX

BIGGER TURBO — GO ALL OUT
Adding the bolt-on iE/Turbo Systems Hybrid turbo, HPFP Upgrade, 5 Bar Map Sensors, upgraded injectors, iE Stage 3 Map Pack, and iE Stage 3 TCU tune delivers up to 424 HP with a strong mid-range pull, effortless passing power, and maximum top-end performance.
REQUIRES APEX

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

• POWERLINK MAKES IT EASY A simple, step-by-step experience that makes flashing safe, clear, and stress-free.
• LIVE GAUGES Turn your phone into a customizable gauge cluster and monitor key engine data in real time.
• DIAGNOSTICS Read and clear trouble codes instantly and understand what your car is telling you.
• DATA LOGGING Record high-resolution engine data to review, share, or send directly to iE support.

TUNE SUITES
Each Tune Suite builds on the last by unlocking new power potential, advanced functions, fuel options, and hardware support.

• Core Features:
  • POWERlink MOBILE
  • AUTOPROTECT
  • 7000RPM LIMIT
  • FREE REVVING ENABLED
  • SPEED LIMITER DISABLED
  • BRAKE BOOST ENABLED
  • START/STOP MEMORY ENABLED
  • MMI TRUEBOOST
  • FREE LIFETIME SUPPORT
  • STAGE 1 MAPS
  • 91 & 93 OCTANE
  • ADJUSTABLE HARDWARE SUPPORT
• Pro Features in addition to Core:
  • STAGE 2 MAPS
  • ADJUSTABLE EXHAUST CRACKLES
  • TRUEFLEX ETHANOL MAPS
  • VALET MODE
  • EXHAUST FLAP CONTROL
  • KICK DOWN DISABLE
  • FAN CONTROL
• APEX Features in addition to Core and Pro:
  • ADJUSTABLE ANTI-LAG LAUNCH CONTROL
  • ADJUSTABLE ROLLING ANTI-LAG
  • NO LIFT SHIFT (MT)
  • BOOST BY GEAR
  • ADJUSTABLE THROTTLE

COMPATIBILITY

• Audi - 
  • 2017-2020 A4 2.0T AWD
  • 2017-2020 A5 2.0T AWD
  • 2017-2020 Q5 2.0T AWD
• FITMENT NOTES
  • 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

iE Stage 3 Turbo Map Pack - WHEN FAST ISN’T FAST ENOUGH.
Stage 3 power isn’t something you guess at. To deliver up to 424 HP while keeping safety intact, you have to sweat the details. That’s what iE does best. The iE Stage 3 Map Pack upgrades your Audi B9 A4 factory engine computer with custom programming calibrated specifically for the Turbo Systems Hybrid turbocharger. Smooth, predictable power with none of the harshness, lag, or unpredictability of generic big turbo setups. Maximum power, smooth drivability, and a brutal pull that keeps building long after the stock turbo falls flat.

WEAPONIZE YOUR A4
Every turbo behaves differently, and generic calibrations leave performance on the table or introduce risky, unpredictable behavior. The iE Stage 3 Map Pack upgrades your factory engine computer with custom programming calibrated specifically for the Turbo Systems Hybrid Turbocharger. This means you get maximum power, smooth delivery, and a true no-compromise big turbo experience with a relentless pull to redline and iE-smooth drivability.

PUSH THE LIMITS, STAY SAFE
Big turbo power should feel exciting, not scary. That’s why iE engineers carefully selected the Turbo Systems Hybrid to deliver maximum safe power on stock engine internals while keeping turbo lag to a minimum. Months of development and real-world testing across different cars, climates, and driving conditions ensure this Stage 3 calibration performs reliably everywhere. Advanced AutoProtect safety logic instantly reduces power if something isn’t right. This is stage 3 power with protection when you need it most.

STAGE 3 HARDWARE GUIDE

• 91 / 93 Octane
  • Air Intake
  • Intercooler
  • Downpipe
  • Turbo Systems Hybrid Turbo
  • HPFP Upgrade
  • 5 Bar Map Sensors
  • VW Injectors (06K906036N)
  • VW Injector Clips (06J133036F)
  • iE Stage 3 Transmission Tune
  • Stage 3 Map Pack
  • APEX Tune Suite

HOW IT WORKS
There is no waiting for an "upgrade license" or back-and-forth emails. When you purchase iE Map Packs, our server identifies your unique POWERlink Serial Number and loads the balance directly to your device via the cloud. No file attachments. No downtime. You simply open the app, and your unlock credits are waiting.

INSTRUCTIONS
We kept this simple. Just locate the Serial Number starting with "V4" on the back of your dongle and enter it at checkout. Once purchased, connect your POWERlink to the app via Bluetooth. The system will auto-sync via the cloud, and your credits will appear in an hour or less.

iE Performance Transmission Tunes

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 - What TCU Tune should I run?
STAGE 1 & 2: START HERE
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.

STAGE 3: BIGGER TURBO
Running an iE Stage 3 hybrid turbo setup? You need the Stage 3 TCU Tune. The added power from iE Stage 3 ECU tuning and the Turbo Systems hybrid turbo requires a transmission calibration built to handle it. The Stage 3 TCU features optimized shift scheduling, faster shift speeds, increased clutch capacity, and a 7200 RPM limit to match the turbo’s powerband. Required for all iE Stage 3 ECU tunes.
REQUIRED FOR iE STAGE 3 ENGINE TUNING