Spool Wireless Ethanol Analyzer Kit – BMW F90 M5 & F91/F92/F93 M8

Vehicle-specific wireless ethanol-content and fuel-temperature monitoring kit for BMW F90 M5 and F9x M8 applications.

• Displays live ethanol percentage and fuel temperature through the smartphone app
• Bluetooth 4.0 Low Energy connection minimises phone battery use
• Free app includes an ethanol-blend calculator
• GM-style ethanol-content sensor integration
• Anodised fuel-line adapter fittings for OEM-style installation
• Helps verify the true ethanol concentration of variable pump E85
• Covered by Spool Performance's listed lifetime warranty

Important: The analyzer reports ethanol content; it does not replace the need for a compatible flex-fuel or ethanol-specific engine calibration.

Confirmed catalogue fitment

• Engine families: S63
• BMW chassis: F90, F91, F92, F93
• Vehicle models: M5, M8, M8 Gran Coupe
• Production years: 2018-2023, 2020-2026
• Drivetrain: AWD

Fuel-system selection and installation

Fuel-system parts must be selected around the complete combination of engine generation, fuel type, target output, existing pump and injector configuration, and the calibration strategy. A component appearing for an engine family does not mean it replaces every factory or upgraded fuel-system arrangement used on that engine.

Professional installation and calibration are recommended where the product changes fuel pressure, pump control, injector flow, ethanol-content input or port-injection operation. Confirm wiring, plumbing, electrical load, controller requirements and compatible supporting hardware before ordering.

Before ordering

Select your exact BMW through MLAB My Garage and review the product options, included parts and installation requirements. Where a vehicle has been modified from its original engine, transmission or fuel-system specification, contact MLAB with the VIN and current hardware list so the combination can be checked before supply.

MLAB support

MLAB by Boost and Tune can assist with product selection, workshop installation and dyno calibration for supported BMW applications in Melbourne. Product availability and lead time should be confirmed when ordering supplier-built or special-order components.