BMW G80 M3 & G82 M4 Spool S58 Wireless Ethanol Analyzer Kit

The Spool wireless ethanol analyzer kit for the BMW G80 M3 and G82 M4 shows the real ethanol content and fuel temperature in your tank right on your phone.

Why you need it

Fuel sold as E85 can legally contain anywhere from 51% to 85% ethanol, so a pump marked E85 may really be closer to E55. Running a lower ethanol blend than your tune expects can damage the engine. This kit pairs a GM ethanol sensor with a Bluetooth 4.0 low energy module, so you always know what is in the tank without draining your phone battery or tying up its normal Bluetooth connections.

Fits

• BMW G80 M3 (S58)
• BMW G82 M4 (S58)

Features

• Live ethanol percentage and fuel temperature (Fahrenheit) in the app
• Uses a GM ethanol sensor
• Bluetooth 4.0 low energy module
• Free app with an ethanol mix calculator that fills in your current E-content

Good to know

Choose the version that matches your setup: one for cars on the OEM high pressure pumps, one for cars running Spool FX350 high pressure pumps. The mix calculator in the app can also be used without the kit.