Spool Performance BMW Wireless Ethanol Analyzer Kit for B58 Engines
Get accurate, real-time ethanol content data on your BMW B58 with the Spool Performance Wireless Ethanol Analyzer Kit. Perfect for E85, E50 and flex-fuel blends, this Bluetooth 4.0 low energy ethanol analyser delivers live E-content percentage and fuel temperature readings straight to your smartphone. It is a robust, cost-effective and proven solution for BMW M140i, M240i, 340i and 440i owners who want safe, consistent performance from their tuned B58 3.0 turbo engines.
We have used this kit ourselves and our customers love how easy it is to monitor ethanol content and blend mixes accurately. If you run or plan to run E85 on your BMW, this is the essential ethanol content sensor kit for reliability, power and peace of mind.
Why monitor ethanol content on your BMW B58?
ASTM guidelines allow pump fuel labelled E85 to vary between 51% and 85% ethanol content. That means your local E85 could be E55 one day and E80 the next. If you run a map designed for higher ethanol but fill with lower content, you risk knock, reduced performance and potential engine damage. A wireless ethanol analyser eliminates guesswork by showing the exact ethanol percentage in your tank so you can blend correctly and tune confidently.
Key benefits
- Real-time ethanol content percentage and fuel temperature monitoring
- Wireless Bluetooth 4.0 Low Energy connectivity for minimal phone battery usage
- Free Spool Performance smartphone app with Ethanol Mix Calculator for perfect blends
- Designed for BMW B58 applications including M140i, M240i, 340i and 440i
- Pairs with a GM ethanol sensor for accurate, stable readings
- Trusted, robust and cost-effective solution for E85 and flex-fuel setups
App features
- Live E-content display and fuel temperature in Fahrenheit
- Ethanol Mix Calculator to simplify E30, E50 or full E85 blending
- Free to download and use, even without the hardware for mix estimates
Perfect for
- BMW B58 ethanol content monitoring on road and track
- E85, E50, E30 and custom flex-fuel blends
- Reliable tuning, logging and safeguarding engine performance
Compatibility
BMW B58 engine models:
1 Series
- F20 LCI (09/2015 — 06/2019): M140i and M140ix
- F21 LCI (09/2015 — 06/2019): M140i and M140ix
2 Series
- F22 (09/2015 — 06/2017): M240i and M240ix
- F22 LCI (09/2016 — 12/2019): M240i and M240ix
- F23 (09/2015 — 06/2017): M240i and M240ix
- F23 LCI (10/2016 — 12/2019): M240i and M240ix
3 Series
- F30 LCI (10/2014 — 10/2018): 340i and 340ix
- F31 LCI (10/2014 — 06/2019): 340i and 340ix
- F34 GT LCI (10/2014 — 2019): 340i and 340ix
4 Series
- F32 (2013 — 02/2017): 440i and 440ix
- F32 LCI (05/2016 — 12/2019): 440i and 440ix
- F33 (03/2015 — 02/2017): 440i and 440ix
- F33 LCI (05/2016 — 12/2019): 440i and 440ix
- F36 Gran Coupé (03/2015 — 02/2017): 440i and 440ix
- F36 Gran Coupé LCI (05/2016 — 12/2019): 440i and 440ix
Part number
SP-ECA-B58
Fitting and support
Want it fitted by experts? Nforcd offers professional installation in Warwickshire. Request a fitting quote at Sales@nforcd.com.
Compatibility check before dispatch
We verify fitment prior to shipping. Provide your UK registration or the last 7 of your VIN at checkout and we will confirm compatibility.
Manufactured by
Spool Performance
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