IE ECU Performance Engine Tune For B9.5 Audi 45TFSI - Core

The B9.5's newer engine computer meant B9 tunes couldn't carry over, so iE built a Core calibration from the ground up for it. It's the platform's biggest power-per-dollar jump, and the first B9.5 tune a driver can flash at home instead of mailing in a file.

THE BEST DOLLAR YOU'LL SPEND

Factory programming is holding your Audi back. iE tuning safely reprograms the engine computer to unleash savage acceleration, sharper response, and a completely new personality... all backed by AutoProtect. Your A4, A5, or Q5 45 TFSI drives sophisticated when cruising and brutal when you floor it.

323 HP DONE RIGHT

Big power means nothing if the car doesn't drive right. iE Stage 1 for your B9.5 2.0T delivers up to 323 HP & 391 ft-lbs with smooth, predictable power. No spikes, twitchy hesitation, or clunky surprises found with inferior tunes. Acceleration pulls hard, throttle response is precise, and everyday drivability stays refined.

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.

FULL POWER, NO EXCUSES

2021+ transmission computers are security locked, forcing conventional tuners to work around factory torque limits by lowering power. iE developed custom engine-side code that properly communicates with the factory transmission to safely support increased clutch pressure and torque capacity. This allows us to deliver full advertised power without low-torque files. No shortcuts... zero compromises.

STAGE 1 (INCLUDED WITH CORE SUITE)

Add up to +55 HP with no required hardware upgrades, making Stage 1 the ultimate power-for-your-dollar upgrade. Keep it completely stock or pair it with an iE Air Intake System for improved airflow and aggressive turbo sound.

FITMENT NOTES

2025 Audi Q5 / Q5 Sportback:Compatible only with previous-generation 45 TFSI models rated at 261 HP (B9.5/FY). Does not fit the redesigned 2025+ 268 HP PPC-generation Q5. If your 2025 Q5 is rated at 268 HP, this tune is not compatible.

40 TFSI / FWD Models:This tune is designed for 45 TFSI quattro AWD models only. 40 TFSI and front-wheel-drive configurations are not compatible.