TrueFlex is our innovative Ethanol tune and market-first Flex Fuel solution for the Audi B9/B9.5 A4, A5, & Q5 2.0T engine. Running ethanol unlocks massive power gains over premium gasoline. No switching tunes, just fill and go!

Ethanol is an alcohol fuel with very high octane. It burns cooler than gasoline, and protects engine components by fiercely resisting knock. The trade-off of Ethanol is that gas mileage will decrease by up to 35%. Per-gallon savings at the pump offset the increased consumption. Modern Audi’s have no corrosion issues with Ethanol fuels.

Installing TrueFlex on your 2.0T is easy. Install the required fuel pump upgrade hardware, purchase and install the iE TrueFlex Sensor Kit and update your iE tune to TrueFlex with your PowerLink app. Fill up with either premium unleaded or ethanol and enjoy maximum performance. Monitor your ethanol blend right on the app.

• Stage 1 & 2 peak power mix 40-60% ethanol

Hardware requirements:

• iE POWERlink Tuning Suite
•  iE TrueFlex Sensor Harness Kit
• iE HPFP Internal Upgrade (fuel pump)
• MK7 2.0T HPFP (PN: 06L 127 027 C)
• Vacuum Pump Housing (PN: 06L 145 100 N)
• Vacuum Pump Gasket (PN: 06H 103 121 J)
• (2x) HPFP Bolts (PN: N 911 287 01)
• (3x) Vacuum Pump Bolts (PN: N 107 394 01)

Note: iE does not offer factory VW/Audi part numbers; these must be sourced from your local dealership or online factory parts retailers.