AutoMeter Ecometer/Universal OBDII Control Arm Shims 1979-1995 GMC K3500

1979-1995 GMC K3500

1/8 in NPT Male Thread

plug and play device that connects to your vehicle's OBDII port and allows for instantaneous monitoring of the exact fuel economy of your vehicle

1963-1963 Plymouth Fleet Special

AutoMeter Ecometer/Universal OBDII Control Arm Shims 1979-1995 GMC K3500The single largest contributing factor to fuel economy on your vehicle is the ? loose nut behind the wheel?. Driver input affects the amount of fuel you use more than anything else. The Ecometer by AutoMeter is a simple, plug and play device that connects to your vehicle's OBDII port and allows for instantaneous monitoring of the exact fuel economy of your vehicle. So much more than a simple vacuum gauge, the Ecometer monitors a huge range of engine