BMW F80 M3, F82 M4 & F87 M2 Spool S55 Wireless Ethanol Analyzer Kit

The Spool wireless ethanol analyzer kit for the BMW S55 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. If your tune expects more ethanol than you are running, it can damage the engine, so knowing the exact content protects your S55.

Fits

• BMW F80 M3 (S55)
• BMW F82 / F83 M4 (S55)
• BMW F87 M2 Competition / CS (S55)

Features

• GM ethanol sensor with Spool Bluetooth 4.0 low energy analyzer
• Ethanol content and fuel temperature (Fahrenheit) readouts
• Free Spool app with ethanol mix calculator
• 6AN PTFE-core lines with braided stainless and black nylon coating
• Works with OEM and Spool FX-150 / FX-180 high pressure pumps

Good to know

The analyzer barely touches your phone battery and leaves your other Bluetooth connections alone. The app is free and its mix calculator also works without the kit.