Nostrum BMW F Series Flex Fuel Sensor Kit

🌽 Nostrum Flex Fuel Sensor Kit – BMW F-Series

Run E85, 93, or Any Blend – Safely & Seamlessly

✅ Say Goodbye to Pump Blending Guesswork

Tired of juggling premium gas and ethanol to get your mix just right? Let Nostrum’s Flex Fuel Kit do the work for you. Designed for all BMW F-Series platforms, this kit enables your tuner to fully leverage E85, 93 octane, or any blend in between—accurately, reliably, and safely.

With a pre-mounted ethanol sensor bracket, direct-fit fuel line adapters, and compatibility with leading ethanol content analyzers, this kit is the ideal plug-and-play solution for flex fuel tuning.

🔧 Kit Includes:

• Pre-mounted ethanol content sensor

• Vehicle-specific mounting bracket

• Direct-fit adapter fuel lines for factory integration

• Ready for use with analyzers like:

  • Nostrum ESIMM

  • Fuel-It! Bluetooth Analyzer (view content on mobile)

  • Zeitronix ECA-2 CANBus (for ECU integration)

💡 Note: A compatible ethanol content analyzer is required to display readings.
This kit alone does not enable tuning for flex fuel. Tuning support is required.

🔍 Compatible BMW F-Series Models:

• 2014–2017 F22/F23 235i, M235i

• 2013–2015 F30/F31/F34 335i, 335i xDrive

• 2012–2015 F30/F31/F34 ActiveHybrid 3

• 2014–2015 F32/F33/F36 435i, 435i xDrive

• 2011–2016 F07/F10 535i, 535i xDrive

• 2012–2016 F07/F10 ActiveHybrid 5

• 2012–2017 F06/F12/F13 640i

• 2013–2015 F01/F02 740i, 740Li

• 2016–2019 F87 M2

• 2015–2018 F80 M3

• 2015–2018 F82 M4

💬 Frequently Asked Questions

Q: Why does your E85 horsepower rating seem lower than 93 octane?
A: Power numbers represent fuel system capacity assuming all other engine systems are optimized (airflow, internals, etc.). While E85 has lower energy density, it allows for more aggressive tuning thanks to its higher knock resistance. So actual power output can still exceed 93 octane in practice—but mathematically, gasoline systems require less flow to hit the same energy output.

Q: Why not just add port injection instead of upgrading DI components?
A: While some tuners prefer port injection (PFI) add-ons, direct injection (DI) upgrades offer better charge cooling, combustion efficiency, and reliability. Relying on PFI alone in a DI motor can lead to overheating the injectors and damaging internal seals—especially under high load. DI upgrades are typically more power-capable and safer long-term.

🔧 Recommended Tuners:

• Bend Calibration

• David Shoup

• Paul Johnson Tuning

• HCPerformance Tuning

• Cary Jordan

🧪 Why Nostrum?

At Nostrum, we don’t just build parts—we engineer them to OEM standards and validate them in real-world performance and endurance applications. Whether you’re daily driving or chasing horsepower records, our Flex Fuel Kit gives your tuner the insight needed to get the most from your setup.

📦 Summary:

• ✅ Direct-fit, no cutting or splicing

• ✅ Compatible with top ethanol content analyzers

• ✅ Supports full E85, 93 octane, or blends

• ✅ Enables safe and powerful flex fuel tuning

• ✅ Built with OEM+ quality and reliability

🔧 Ready to make the switch to flex fuel? Install this sensor kit, pair it with a content analyzer, and let your tuner unleash the true potential of your F-series BMW.