IE ECU calibrations are dedicated to perfecting every section of the mapping to deliver a fully realized performance file right out of the gate. Maximized for full performance potential on the drag strip and road coarse while maintaining full comfort and reliability on your daily commute. Get ready to experience IE's Performance Software For your VW GTI, GLI or Audi A3 and TT in only minutes from the comfort of your garage or driveway.  

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IE's TrueFlex unlocks the flexibility to run full E85 down to 91 octane gas and any mix in between on a single tune without the need to reflash the ECU. IE's software engineers and calibrators have developed our own advanced TrueFlex calibration, allowing the ECU to safely adjust for ethanol content down to the exact percentage in real-time. This powerful programming brings the ease and confidence to fill up at the pump and make the most power available from your fuel choice without having to drain, verify blends, or reflash the ECU.

E85 TrueFlex is an included option for 2015-2018 stage 1, 2, & IS38 tunes and up to E30 on stage 3. 2019+ support is coming soon!

Factory equipped flex-fuel calibrations are designed to adjust for the cleanest emissions for different ethanol blends to get the highest MPG. This typically results in maximum timing for the lowest octane (91) across the entire range up to E85, leaving loads of untapped power on the table. IE TrueFlex is a complete performance adaptation that makes instant and continuous adjustments to performance maps such as boost and timing and releases the most available power for the fuel mix as it enters the cylinder.

Not only does IE TrueFlex allow for amazing power potential, but it also offers the most safety from ethanol blends. The ability to truly meter and adjust for ethanol content allows the tune to instantly alter the ECU maps to keep the engine in the optimal range and protect from dangerous lean conditions. This offers amazing protection from pumps that may have lower than advertised ethanol content or if no ethanol is available. Fill up with the best quality fuel available to you, and let TrueFlex do the rest!

The EA888 Gen 3 2.0T engine is not equipped with any type of Flex Fuel systems from the factory and lacks the ability to sense fuel content. In order for IE's TrueFlex ECU tune to work, an IE TrueFlex Sensor Harness Kit is required. This easy to install harness kit installs a sensor capable of delivering instant fuel content data to the ECU calibration.

Ethanol offers higher power output but also requires more fuel delivery than regular pump gas. The stock High Pressure Fuel Pump (HPFP) can not deliver enough fuel to support ethanol and must be upgraded. Upgrading the HPFP ensures there will be enough fuel supply for ethanol content to run reliably at all elevations and climate conditions safely.

Due to the high-power output of IE TrueFlex ethanol tunes, the IE DSG TCU calibration is required to prevent the factory clutches from slipping under load. Additionally, the DSG calibration will deliver higher RPM limit, faster shifts, optimized shift points, adjustable launch control, and a true performance tuned transmission. Acceleration times will greatly improve giving you the most performance from your TrueFlex ethanol tune. Manual transmission vehicles require a clutch upgrade.