IE ECU Performance Engine Tune For B9 Audi RS4/RS5 2.9T

The 2.9T shares hardware with far pricier cars, and iE's calibration goes after that headroom directly — gains of up to 522 HP on pump gas and up to 604 HP on ethanol, wrapped in the same adjustable feature suite and CarPlay-reachable live controls as the rest of the POWERlink lineup.

CUT THE CHAINS

Audi left performance on the table. iE tuning suite sets it free by safely reprogramming your engine computer to unleash heavy-hitting acceleration, sharper response, and a completely new personality... all backed by AutoProtect.

HORSEPOWER DONE RIGHT

iE B9 RS5 tuning delivers up to 604 HP and up to 660 ft-lbs with power that builds cleanly and consistently without spikes, hesitation, or clunky behavior. Acceleration pulls hard, throttle response is exact, and driving behavior is perfected for everyday use. Sophisticated when cruising, then brutal when you floor it.

FAST, NOT RECKLESS

This isn't a rushed one-off 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. AutoProtect continuously monitors critical engine conditions and instantly reduces power when needed. Enjoy massive power with protection built in.

CUSTOMIZE YOUR SOUND

Turn on Exhaust Crackles to give your Audi RS5 attitude with dramatic pops and burbles on decel and shifts. Make instant changes from the app or CarPlay to turn it up, tone it down, or switch it off in real time. Kill the drone or free the beast with anytime exhaust flap control The sound you want, exactly when you want it.

GO BEYOND THE APP

Take LIVE tuning beyond the POWERlink app with CarPlay, Widgets, and Siri. Access supported adjustable features faster, with convenient controls built around how you drive.

NEVER LAG BEHIND

iE Anti-Lag builds boost before you move, delivering hard-hitting AWD launches that grip and go. Rolling Anti-Lag™ (RAL) delivers the same advantage at speed for immediate power from a roll. Make instant launch RPM adjustments from the app, your cruise control stalk, or CarPlay and adapt to any surface.

ADJUSTABLE THROTTLE RESPONSE

iE tunes come standard with predictable and proportional throttle response. If you're looking for even more control, take command over 15 customizable settings ranging from calm and linear to sharp and immediate. Changes apply instantly in the app, so you can switch from economy to aggressive at any time. One tune, multiple personalities. No dangling hardware needed.

TRUEFLEX: E85 MADE EASY

Ethanol is like rocket fuel for your RS5, 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. No measurements. No math. No reflashing. Fill with 91/93 pump gas, full E85, or any blend in between. Just fill and drive.

BUILD GUIDE

Your path from stock to savage

STAGE 1

Experience up to 542 hp with nothing more than a Stage 1 CORE ECU Tune on 91 or 93 octane. Step up to PRO or APEX and gain even more power with TrueFlex ethanol upgrades. Pair with an intake for improved airflow and aggressive turbo sound.

INCLUDED WITH CORE, PRO, & APEX

STAGE 2

To safely maximize the stock turbo, you’ll need downpipes, an intake, and intercooler. Increased airflow and cooling keep power consistent while acceleration pulls harder across the powerband. Add an HPFP upgrade to Stage 1 or 2 for up to 604HP!

INCLUDED WITH PRO, & APEX