Description
Take the guesswork out of running ethanol blends with the BMW B58 G05 X5 & G07 X7 40i Bluetooth Flex Fuel Kit. Designed specifically for 2019+ BMW X5 40i and X7 40i models equipped with the B58 engine, this complete plug-and-play kit provides real-time ethanol content monitoring, allowing you to optimize performance, improve tuning accuracy, and protect your engine.
E85 fuel quality can vary significantly depending on the station, season, and location. While pumps are labeled "E85," the actual ethanol content can range anywhere from E50 to E85 or higher, and even premium pump gasoline may contain up to 10% ethanol. This Bluetooth Flex Fuel Kit eliminates the uncertainty by displaying your exact ethanol percentage directly on your smartphone through the Fuel-It! or JB4 app.
Whether you're running a JB4, custom flash tune, or factory-based ethanol tune, knowing your precise fuel blend allows you to safely maximize horsepower, optimize ignition timing, and maintain consistent performance.
Features & Benefits
- Real-time Bluetooth ethanol content monitoring
- Displays precise ethanol percentage using the Fuel-It! or JB4 mobile app
- Integrated 0–5V analog output for JB4 and custom flash tuning
- Genuine Continental® ethanol sensor for OEM-quality accuracy and reliability
- Plug-and-play installation with no cutting or permanent modifications required
- High-quality PTFE fuel lines designed for long-term ethanol compatibility
- Premium fuel fittings for leak-free performance
- Typical installation time of approximately 30 minutes
- Engineered specifically for BMW B58-powered G05 X5 and G07 X7 models
Why Install a Flex Fuel Sensor?
Ethanol content directly affects engine tuning, ignition timing, fuel delivery, and boost levels. Since E85 fuel is rarely a true 85% ethanol blend, relying on pump labels alone can lead to inconsistent performance or unsafe fuel mixtures.
This Bluetooth Flex Fuel Kit allows you to:
- Monitor your exact ethanol percentage before every drive
- Accurately blend E85 and pump gasoline
- Optimize boost and ignition timing for your tune
- Maintain consistent engine performance
- Reduce the risk of running incorrect fuel mixtures
- Improve engine safety when using ethanol-based performance tunes
Knowing exactly what's in your fuel tank allows your tuning strategy to perform as intended.
Premium Components Included
- Genuine Continental® ethanol content sensor
- Fuel-It! Bluetooth ethanol analyzer
- Heavy-duty 5/16-inch PTFE E85-compatible fuel lines
- Plug-and-play wiring harness
- Bluetooth app connectivity
- Integrated 0–5V analog output for JB4 and flash tuning applications
Installation
The kit is designed as a direct plug-and-play upgrade with no permanent modifications required.
- Approximate installation time: 30 minutes
- No cutting of factory fuel lines
- No irreversible vehicle modifications
For BMW G-Chassis vehicles using the JB4 platform, connect the white wire to Position #4 on the JB4 25-pin harness and select WMI Ethanol Setup Option 0 to enable the flex fuel input.
Vehicle Fitment
BMW X5
- 2019+ BMW G05 X5 40i
- 2019+ BMW G05 X5 xDrive40i
BMW X7
- 2019+ BMW G07 X7 40i xDrive
Compatible with all B58-powered G05 X5 and G07 X7 40i models.
Why Choose This Bluetooth Flex Fuel Kit?
Whether you're running pump gas, E30, E50, or full E85, this kit provides the accurate ethanol data needed to safely maximize performance. Featuring OEM-quality components, seamless Bluetooth connectivity, and straightforward installation, it's an essential upgrade for any ethanol-tuned BMW B58 owner.
