Bootmod3 FlexFuel Kit High-Flow – Toyota GR Supra A90/A91 / BMW Z4 G29

OVERVIEW

The bootmod3 FlexFuel Kit – High Flow makes getting the required flex fuel hardware onto your A9X Supra or G29 Z4 M40i straightforward, in your own driveway. The kit is entirely plug and play with the factory vehicle harness — no cutting or splicing of OEM wiring or connectors. It installs in minutes and can be removed without a trace on the car.

bootmod3 designed the Flow Optimized Flex Fuel Sensor Adapter (FFSA) so that fuel flow is unobstructed and adds no pressure drop at full fuel pump flow from the tank to the motor. That matters when pushing the factory fuel system with the power ethanol can provide over gasoline. The sensor housing installs neatly into the factory fuel hat location.

Install the kit, flash a flex fuel enabled bootmod3 OTS MultiMap or custom map, and the alcohol/gasoline blend percentage in your tank is handled automatically — no re-flashing between fills.

SPECS

• Custom 3-piece Aluminum-6061 flex fuel sensor adapter with built-in sensor bypass for obstruction-free fuel flow, sized to fit the vehicle factory fuel hat area below the rear seat
• Flow optimized design: no added pressure drop at full fuel pump flow
• All connecting points sealed with fuel-safe Viton o-rings
• Flex fuel sensor adapter housing provides two additional 1/8 NPT ports for an optional fuel pressure sensor, supporting bootmod3 CustomROM v2
• CANBUS-enabled Ethanol Content Analyzer (ECA) that integrates with bootmod3 CustomROM for a complete, seamless FlexFuel conversion
• Works with bootmod3 flex fuel enabled OTS MultiMaps and with custom tunes from your bootmod3 tuner of choice
• Power/CANBus 4-wire harness, 100% plug and play with the factory vehicle harness
• Custom, kink-free teflon braided line allows plug-and-play installation with the OEM fuel hat and factory fuel feed line — no cutting and no new lines required
• Uses a Continental flex fuel sensor
• Fully reversible and removable, back to stock without a trace, in minutes

PARTS INCLUDED

• Custom 3-piece Aluminum-6061 flex fuel sensor adapter (FFSA) with built-in sensor bypass
• Continental flex fuel sensor
• Flex fuel sensor 3-wire harness
• CANBUS-enabled Ethanol Content Analyzer (ECA) board
• Custom Aluminum-6061 CANBus enclosure for the bootmod3 ECA board
• Power/CANBus 4-wire plug-and-play harness
• Custom, kink-free teflon braided line
• -6 AN fitting by Racetronix
• Fuel-safe Viton o-rings

TECH RESOURCES

Additional Parts Required

• A bootmod3 tune license — required. For the Supra: Bootmod3 B58 Tune – Toyota GR Supra Mk5 (A90 / A91). For the Z4 M40i: Bootmod3 B58 Tune – BMW F/G-Series.
• Speed Logic ECU Unlock Service – B58 Gen 2 — needed on cars with November 2019 or later software before bootmod3 can be flashed.
• A flex fuel enabled bootmod3 OTS MultiMap or custom map — required to use the ethanol reading.
• E85 or ethanol-blended fuel. The kit only measures and reports ethanol content — you supply the fuel.
• Optional: an auxiliary fuel pressure sensor for the two 1/8 NPT ports (not included).
• Basic hand tools supplied by the installer, plus rear seat removal to access the factory fuel hat.

Installation

• bootmod3 Flex Fuel Kit installation instructions (official bootmod3 wiki, with vendor install videos)
• bootmod3 v3.0 User Manual (official bootmod3 wiki)

Notes

• This is an OEM fuel hat location kit intended for the OEM fuel pump and associated wiring; any variation to fuel lines or fuel pumps may not be compatible. Confirm fitment with Speed Logic if your vehicle is not listed below.

VEHICLE APPLICATIONS