Air and Fuel› Oxygen Sensors, Controllers and Components

iBuildRacecars

FLX01 Flex Fuel Upgrade Kit

$439.99

SKU: IBR-FLXUPG-3PIN

In Stock
In Stock
Ships by Jul 29
Free Shipping
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The I Build Race Cars FLX01 Flex Fuel Upgrade Kit is designed to data log and monitor ethanol content in fuel for Subaru vehicles. Its proprietary controller generates its own 12V supply, reducing wiring, installation time, and improving reliability. The system accurately references the ECU 5V power for consistent data.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandiBuildRacecars
Part NumberIBR-FLXUPG-3PIN
CategoryAir and Fuel

Buy with Confidence

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.

View Full Return Policy