Unlock Big Power with No Hassle: Introducing iE’s TrueFlex™ Ethanol Tuning for VW & Audi MQB
Jun 13th 2025
If you're chasing more power from your turbocharged VW or Audi, ethanol might just be your secret weapon. But let’s face it — running E85 usually means switching maps, checking ethanol content, and risking engine damage if you get it wrong.
Integrated Engineering’s TrueFlex™ Tuning changes all that.
TrueFlex is the ultimate plug-and-play ethanol tuning solution designed specifically for the MQB-platform VW MK7 GTI, GLI, Golf R, and Audi S3/A3 2.0T engines. It brings the big power potential of E85 without any of the traditional headaches. No tune swapping. No guesswork. No compromises.
Why Ethanol?
Ethanol is a high-octane alcohol-based fuel that resists knock, burns cooler than gasoline, and allows your engine to run more aggressive timing and boost. It’s the go-to fuel for performance enthusiasts because it:
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Produces massive power gains compared to premium gasoline
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Burns cooler, helping protect engine components
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Costs less per gallon than 91/93 octane
Yes, it burns faster (expect up to 35% lower fuel economy), but most drivers find the cost savings and power benefits more than make up for it.
Modern VW and Audi engines are fully compatible with ethanol, so there’s no concern about corrosion or long-term issues.
What Makes TrueFlex™ So Special?
TrueFlex™ is not just another flex-fuel tune — it’s a total game-changer.
Here’s how it stands out:
Automatic Fuel Detection
No more switching maps or doing ethanol math. TrueFlex™ uses a sensor to instantly read ethanol content in your tank and automatically adjusts the tune for maximum performance and safety.
Seamless Driving Experience
Run E85, 91, 93, or anything in between — your engine adapts instantly. Just fill up and drive. It’s that simple.
Max Power, Max Protection
The system adjusts timing and boost in real time, giving you the most power possible while safeguarding your engine.
Flash Once, Forget It
After installing your TrueFlex™ tune using the iE POWERlink app, you’re done. The system works silently in the background — forever.
Easy Installation
Getting started is simple. Here’s what you’ll need:
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iE TrueFlex™ Sensor Kit
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HPFP (High-Pressure Fuel Pump) Upgrade
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TrueFlex™ Tune via the iE POWERlink App
Installation is a breeze, and your ethanol content can be monitored right on your app’s live gauge display.
Ready to Go Full Boost?
If you’re serious about performance and want to get the most out of your turbocharged VW or Audi, iE’s TrueFlex™ is the smartest, most advanced ethanol tuning solution available today.
Fill up. Start the car. Enjoy the power.
No compromises. No limits.
Sensor Kits