Air and Fuel› Fuel Injection Systems and Components - Electronic

IE Engineering

Trueflex Ethanol Harness Kit

$349.99

SKU: IEELDB1

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The IE Engineering iE Trueflex Ethanol Harness Kit is a plug-and-play kit designed for VW MK8 GTI, Golf R, and Audi 8Y S3 models. It enables the use of iE TrueFlex tuning features, allowing for instant adjustments between different fuel blends like 91 pump gas and E85. This kit sends real-time sensor data to iE ECU calibrations.
Show original supplier description
The IE Engineering iE Trueflex Ethanol Harness Kit is engineered to unlock the full potential of flex-fuel tuning for your 2022+ VW MK8 GTI, Golf R, or Audi 8Y S3. This complete plug-and-play harness kit is required to utilize iE TrueFlex tuning features, allowing for instant adjustments from 91 octane pump gas to full E85 without needing to manually change tunes. The kit features the iE Ethalyzer, an in-house designed component that converts raw ethanol sensor signals into a clean voltage signal for the ECU. This provides your engine management system with instant, real-time fuel content information, enabling seamless adjustments to ignition, fueling, and boost for maximum performance, safety, and reliability on any fuel blend. The average installation time is around 3 hours, though professional expertise is recommended for disconnecting and cutting factory soft fuel lines. The kit is compatible with 2022-2024 VW MK8 GTI, 2022-2024 VW MK8 Golf R, and 2022-2024 Audi 8Y S3 models. Fitment notes specify that it requires iE TrueFlex Tuning Features found in the Pro or Apex Suite. Please be aware that this product is not currently legal for road use in California as it does not comply with California emissions laws and cannot be sold or shipped to California addresses. Additionally, it carries a California Prop 65 warning regarding potential exposure to chemicals known to cause cancer, birth defects, or other reproductive harm.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandIE Engineering
Part NumberIEELDB1
CategoryAir and Fuel

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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