bootmod3 FlexFuel Kit | N55, S55, B58

Pro Tuning Freaks have been working tirelessly since late 2015 to create a truly unique cloud based performance flash tuning platform offering benefits both end users and tuners in ways prior unimaginable! bootmod3 is a full custom tuning platform for the factory engine computer (DME) available for Windows, macOS and mobile apps for iOS and Android. Users can change their tunes through the OBD port in their own driveway using the web or mobile apps taking just seconds to do so.

Product Information

Pro Tuning Freaks are proud to bring out this truly awesome product that makes getting the required Flex Fuel hardware on your BMW with incredible ease and minimal effort, in your own driveway.

The bootmod3 FlexFuel Kit is entirely plug and play with the factory vehicle harness. No cutting, splicing or de-pinning OEM wiring/connectors. It installs in 5 minutes and can be removed without a trace on the car in even less time!

The team used SolidWorks to design a Flow Optimized Flex Fuel Sensor Adapter (FFSA) to ensure fuel flow is unobstructed and with no added pressure drop at full fuel pump flow from the fuel tank to your motor when the BM3 FlexFuel Kit is installed. This is important when pushing the factory fuel system with all the power Ethanol can provide over petrol!

Flex fuel sensor housing is designed to neatly install into the factory BMW fuel hat location. It features top of the line fuel hose manufactured and pressure tested in house by industry leaders in fuel line components, XRP.

Flex Fuel Sensor Adapter also contains two 1/8 NPT ports that allow installation of an auxiliary Fuel Pressure sensor for vehicles that don’t come with an OEM one from the factory for future use. Depending on fitment, either port can be used.

Install the BM3 FlexFuel Kit and flash your flex fuel enabled BM3 OTS MultiMap or Custom Map in minutes and you’re off to the races never worrying about alcohol/petrol blend % in your fuel tank. It does not get better or easier than this!

BM3 FlexFuel 'Plug & Play' Kit:

  • 5 mins to install at home as opposed to hours at a shop with car up on lift fabricating/cutting into factory fuel lines and splicing/cutting/pinning into OEM electrical.
  • 4+ hours in time/cost savings to get going on Flex Fuel as compared to most other kits that require making custom fuel lines, fittings and custom wiring! 
  • Fully reversible/removable and back to stock without a trace in 5 minutes.
  • Custom 3-piece Aluminum-6061 Flex Fuel sensor adapter with built-in sensor bypass to allow for obstruction free fuel flow made to fit in the vehicle factory fuel hat area below the rear seat.
  • All connecting points sealed with fuel safe Viton o-rings.
  • Flex Fuel Sensor Adapter housing provides additional 1/8 NPT ports for optional Fuel Pressure sensor addition to vehicles without a factory one for BM3 CustomROM v2 support.
  • CANBUS Enabled Ethanol Content Analyzer (ECA) that integrates with BM3 CustomROM for complete and seamless conversion of your BMW to FlexFuel for BM3 Flex Fuel enabled OTS MultiMaps and custom tunes with your BM3 tuner of choice.
  • Power/CANBus 4-wire plug and play harness.
  • 100% Fully Plug & Play harness to the BMW Fuel Controller connectors (EKP3) on S55, N55 vehicles.
  • Continental Flex Fuel sensor 3-wire harness.
  • Custom Aluminum-6061 CANBus Enclosure for the BM3 ECA board.
  • Custom Fuel Line by XRP, kink-free teflon braided line allowing plug and play with the OEM fuel hat and factory 5/16” fuel feed line. No cutting or new lines required.
  • -6 AN fitting by Racetronix.

bootmod3 FlexFuel Kit | S55
Suitable for models such as the F87 M2 Competition Coupe, F80 M3 Sedan, F82 M4 Coupe and F83 M4 Convertible including Competition, CS and GTS variants.

bootmod3 FlexFuel Kit | N55
Suitable for models such as the F20 M135i Hatch, F22 M235i Coupe, F23 M235i Convertible, F87 M2 Coupe, F30 335i Sedan, F31 335i Touring, F34 335i Gran Turismo, F32 435i Coupe, F33 435i Convertible and F36 435i Gran Coupe. Other N55 models may be compatible - please contact us for further information.

*** NOTE *** B58 (Gen1 and Gen2) vehicle plug and play harness is in the works. While we suggest waiting for the plug and play harness, for those eager to get going right away and who don't mind tapping 4 wires as per our instructions (12v power, Ground and CAN_H and CAN_L wires), you can email us to discuss placing this order with us before the B58 plug and play harness is ready.

  • 1 Series / F20 (2012-2019) / M140i
  • 1 Series / F20 (2012-2019) / M135i
  • 2 Series / F22 / F23 (2014-2021) / M240i
  • 2 Series / F22 / F23 (2014-2021) / M235i
  • 2 Series / F87 M2 (2016+) / M2 Competition
  • 2 Series / F87 M2 (2016+) / M2
  • 2 Series / F87 M2 (2016+) / M2 CS
  • 3 Series / F30 / F31 / F34 (2012-2018) / 340i
  • 3 Series / F30 / F31 / F34 (2012-2018) / 335i
  • 3 Series / F80 M3 (2014-2019) / M3
  • 3 Series / F80 M3 (2014-2019) / M3 Competition
  • 3 Series / F80 M3 (2014-2019) / M3 CS
  • 3 Series / G20 / G21 (2019+) / M340i
  • 4 Series / F32 / F33 / F36 (2014-2020) / 440i
  • 4 Series / F32 / F33 / F36 (2014-2020) / 435i
  • 4 Series / F82 / F83 (2014-2019) / M4
  • 4 Series / F82 / F83 (2014-2019) / M4 Competition
  • 4 Series / F82 / F83 (2014-2019) / M4 CS
  • 4 Series / F82 / F83 (2014-2019) / M4 GTS
  • 4 Series / G22 / G23 / G26 (2020+) / M440i

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