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

The Spool wireless ethanol analyzer kit for the BMW F90 M5 and F9x M8 shows your in-tank ethanol percentage and fuel temperature live on your phone.

Why you need it

Under ASTM guidelines, fuel sold as E85 can contain anywhere from 51% to 85% ethanol. Running a lower ethanol blend on a tune built for more can damage your engine. Knowing your exact ethanol content lets you blend and tune with confidence.

Fits

• BMW F90 M5 (S63)
• BMW F91 / F92 / F93 M8 (S63)

What's included

• Spool wireless ethanol analyzer module (Bluetooth 4.0 low energy)
• GM ethanol content sensor
• Anodized aluminum fuel line adapter fittings for the OEM lines
• Free Spool phone app with ethanol mix calculator

Good to know

The analyzer uses Bluetooth low energy, so it barely touches your phone battery and leaves your other Bluetooth connections alone. Fuel temperature reads in Fahrenheit. The app is free and its mix calculator also works without the kit.