- Horsepower & torque gains maximized
- Includes 91, 93 & E85 fuel options
- Stage 1 for stock hardware or basic bolt-ons
- Stage 2 for full bolt-on support
- Stage 1 & 2 Plus HPFP for maximum ethanol power
- Stage 1 Transmission tune included with ECU purchase
- Stage 2 Transmission tune upgrade available
- Engine RPM limit raised to 7000RPM
- Neutral/park free-rev limit raised to 6800 RPM
- Recalibrated power & torque gauge displays higher output
- Rescaled factory boost gauge shows greater boost
- Left foot/brake boosting enabled for rolling launch
- Eliminated/minimized turbocharger surge
- Reduced turbocharger lag
- Road speed limiters removed
- More aggressive overrun/crackle in Dynamic mode (Stage 2)
- Crackles enabled for free revving in park or neutral (Stage 2)
- Optimized throttle scaling for dependable throttle use
- Boost control reconfigured for smooth and crisp power delivery
- Reliable fuel ratios for safe exhaust gas temps on all fuels
- Engineered for all climates and elevations
- Direct port OBDII at-home flashing
Pay in installments of $160.69 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 4 - Aug 9
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
IE Performance ECU Tune - Audi / B9 / B9.5 / RS5 / RS4 / 2.9TLEADING FEATURES Horsepower & torque gains maximized Includes 91, 93 & E85 fuel options Stage 1 for stock hardware or basic bolt ons Stage 2 for full bolt on support Stage 1 & 2 Plus HPFP for maximum ethanol power Stage 1 Transmission tune included with ECU purchase Stage 2 Transmission tune upgrade available Engine RPM limit raised to 7000RPM Neutral park free rev limit raised to 6800 RPM Recalibrated power & torque gauge displays higher output
LEADING FEATURES
ECU STAGES
HIGH PERFORMANCE ENGINE PROGRAMMING
IE 2.9T STAGE 1
IE Stage 1 ECU calibration is a simple flash-only upgrade that delivers instant performance with up to 542HP and 558ft-lbs of torque! The larger powerband, 7000RPM rev limit, and increased boost pressures produce exceptionally faster 0-60 times and acceleration in any scenario. This advanced calibration can be installed in an entirely stock car or will adapt to take advantage of intake and intercooler upgrades.
See performance tab for full performance results & dyno reports
IE 2.9T STAGE 1 PLUS
IE Stage 1 Plus delivers the most power possible from E85 fuel with an upgraded HPFP (High Pressure Fuel Pump). By increasing the fuel pump's ability to supply additional ethanol demands, our Stage 1 Plus tune produces an even more significant surge in power with a massive 604 horsepower and 660ft-lbs of torque! This ECU calibration pushes your Audi RS5/RS4 into a higher vehicle class of performance with an intense pull. Requires HPFP upgraded internals with 11.7mm pin size
Stage 1 Plus is included at no additional cost.
IE 2.9T STAGE 2 / STAGE 2 PLUS
IE Stage 2 and Stage 2 Plus ECU tunes are calibrated for aftermarket downpipes to deliver a louder exhaust note and include a more aggressive exhaust overrun/crackle feature in dynamic drive mode.
The 2.9T engine includes two already efficient factory downpipes that do not result in power or exhaust restrictions on stock turbocharger ECU tunes. Although this platform does not provide additional power gains on Stage 2 tunes, IE files will provide the necessary ECU calibrations to support aftermarket downpipes for users looking for a more aggressive exhaust note.
UPGRADING STAGES
Upgrading from Stage 1 to Stage 2 or beyond is easy! With IE, you only pay the difference in tune cost with no extra fees. After installing any required hardware, launch your IE POWERlink software and enjoy the next power level in minutes!
HARDWARE GUIDE
While no hardware upgrades are required for Stage 1, upgrading the intake, turbo inlet, and intercooler will provide increased airflow, lower intake air temps, and quicker heatsoak recovery for an overall more efficient and faster vehicle.
| PART UPGRADE | STAGE 1 | STAGE 2 | NOTES |
|
STAGE 1 TCU TUNE (INCLUDED) |
|
|
Required (inlcuded with purchase) |
|
STAGE 2 TCU TUNE |
|
|
Compatible with all stages |
|
AIR INTAKE |
|
|
Compatible with all stages |
|
TURBO INLET PIPE |
|
|
Compatible with all stages |
|
INTERCOOLER |
|
|
Compatible with all stages |
|
HEAT EXACHANGER |
|
|
Compatible with all stages |
|
HPFP UPGRADE |
|
|
Requires Stage 1 or 2 Plus |
|
CATBACK EXHAUST |
|
|
Compatible with all stages |
|
DOWNPIPES |
X |
|
Not Compatible With Stage 1 |
TECHNICAL FEATURES
IE calibration engineers have not only made the engine more powerful, every ECU stage includes extensive adjustments and features to make every bit of the driving experience refined and enjoyable.
EXHAUST OVERRUN
Stage 2 files turn up the volume on exhaust overrun crackles for an exciting exhaust sound on engine decel and when free-revving in neutral or park. This feature is only enabled in Dynamic drive mode. Exhaust Overrun is included on stage 2 tunes only.
BRAKE BOOST
Brake Boosting is commonly used in roll racing, which allows you to build extra boost by applying brake pressure while accelerating. Release the brake pressure for a "rolling launch" or extra power surge.
Brake Boost is included on all tune stages.
THROTTLE MAPPING
IE engineers have mathematically rescaled the entire mass flow model over 30 maps which corrects the entire throttle input range. This extensive remapping work delivers a linear and predictable throttle pedal with clean and linear boost delivery, which improves drivability in any scenario.
BOOST CONTROL
The stock ECU, boost control programming is a very "close enough" approach, which works fine in low-boost and stock power output. When increasing performance, this slow response is reflected in the torque curve and can feel erratic on long power pulls. IE calibrators have smoothed the power curve by introducing a new boost control mapping strategy with precision boost request targeting, resulting in unmatched power delivery.
VE MODELING
The factory 2.9T engine's MG1 ECU relies on a complicated volumetric efficiency (VE) model to convert boost to engine load and accurately deliver fuel for various conditions. Instead of depending on fuel correction tables to compensate, our calibrators have remodeled the VE mapping for the new boost/load relationship. This extensive work delivers reliable and proper fueling and smooth power delivery you can feel.
EGT OPTIMIZATION
ECU programming uses exhaust gas temp (EGT) readings to make air/fuel corrections and determine the health of the combustion cycle. Countless development hours were spent adjusting boost, air/fuel ratio, ignition timing angle, camshaft phasing, intake air temps, and much more to develop the proper EGT adjustments for every octane file.
Enjoy power gains from different fuel options knowing each was individually optimized to provide reliable engine operation without sacrificing power.
MAXIMIZED OUTPUT
IE's advanced tuning technology suite allows our software engineers to realign all safety protocols and sensors for the new performance calibration. Every tune parameter undergoes months of testing on our in-house dyno systems that utilize the world's only Sea Level Generator developed specifically to verify tune operations in any condition. Confidently drive from LA to Pikes Peak with the power to keep you smiling every mile!
POWER GAINS
North American Region (NAR) = AKI / Rest Of World (ROW) = RON
| STAGE / FUEL | HORSEPOWER | TORQUE |
|
Stock Audi advertised numbers |
444 HP |
443 FT-LBS |
|
Stock IE dyno numbers |
456 HP |
485 FT-LBS |
|
Stage 1 & 2 91 AKI / 95 RON |
502 HP |
565 FT-LBS |
|
Stage 1 & 2 93 AKI / 98 RON |
522 HP |
572 FT-LBS |
|
Stage 1 & 2 E85 |
542 HP |
581 FT-LBS |
|
Stage 1 & 2 Plus E85 |
604 HP |
660 FT-LBS |
IE calibrators have maximized stock turbos and extracted full power potential on Stage 1 tunes without needing downpipe upgrades. Stage 2 and 2 Plus tunes are calibrated for aftermarket downpipes but will produce the same power as Stage 1 and Stage 1 Plus ECU tunes.
POWERlink Mobile
Add power to your Audi or VW and experience the game-changing freedom of mobile flashing. The IE POWERlink cable and app connect to your Apple or Android phone, giving you the power to tune your car, change octanes, upgrade stages, perform diagnostics, monitor live gauge data, and more. All from the palm of your hand! Add power anytime, anywhere -no laptop, no cord, no hassle.
Existing IE POWERlink V4 cable owners will require a free firmware update to enable Bluetooth connectivity. Simply plug in your cable to your Windows 10+ device and launch our Flash Wizard software to auto-update your cable.
Note: POWERlink Mobile requires an IE POWERlink cable, and the necessary credits required to tune your car. For further questions, contact [email protected].
Download the app today! Available on both Apple and Android.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 7 reviews
Sort
Product Reviews
★★★★★ 5
Style, Comfort
Size: 9, Color: Sand
If I could give a Ten Star review, I would. Hands down the most comfortable pair of sandals I have ever owned.
I wore them 16 days straight while touring Italy. Comfortable and goes with all of your outfits. They pack well in a suitcase too. Light weight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Wonderful
Super comfy and easy on and off, yet stylish imo! I could walk miles in these as a 56 yo and have worn them for three years! I hope they never stop making them. The only tweek I would suggest is to cover the footbed with leather or suede not cloth so they would last longer!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026
★★★★★ 5
Great value and super comfy!
Size: 7, Color: Sand
These shoes are so comfortable and my new go to for summer. They are lightweight and fit like a glove. Great value
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Lovely sandals!
I highly recommend!
These are so comfortable! Right out of the box, they can be worn all day. The velcro-adjustable straps are great for making for a perfect fit. The aren't clunky to wear, even though they appear to be. They're super cute, in my opinion. The sock liner is textile, so feet feel good all day, not slimy, like leather and suede can sometimes make feet feel if socks aren't worn.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
★★★★★ 5
Cute and Comfortable
Size: 10, Color: Black
This is my second pair. I bought the sand color at my local Macy's. I got their last pair. I have issues with back pain and ankle swelling and pain. These are so comfortable I had to get them in Black. The adjustable straps are great. My feet are a little bit wider because of the swelling issues. So if you have very narrow feet these might be a little big. You might want to go down a half a size. But otherwise I wear a size 10 and they fit perfectly. I don't think the picture does the color justice. The black almost looks like velvet, it's very deep and rich. I wore them out today for the first time and got lots of compliments. The footbed is very comfortable with the memory foam. Lots of support. I noticed my back and ankle pain is much better wearing these. I've never owned UGG before. If these hold up really well and continue to stay comfortable, I will be purchasing other styles for fall and winter.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026