F.A.S.T. Single Sensor Air/Fuel Meter Kit - Wireless - Smartphone Compatible 355016 Fittings are sold in a

Fittings are sold in a pack of 2

EFI Adjustable Regulator

2007-2008 GMC Yukon XL 2500

drawing only 1

1967-1972 Fargo D100 Pickup

F.A.S.T. Single Sensor Air/Fuel Meter Kit - Wireless - Smartphone Compatible 355016 Fittings are sold in aFAST's Wireless, dual sensor technology measures your engines air fuel ratio with precision accuracy, all from the convenience of your smart phone! FAST has revolutionized the tuning industry with the most advanced, App based, wireless, air fuel meter. The FAST Wireless Air Fuel Meter uses an underhood mounted Bluetooth module, connected to oxygen sensors in both of your engines exhaust outlets, giving you the full story on the state of your engines