These gauges are stepper motors and need to be powered on to return to zero. It is normal that the pointer does not return to zero when powered off.
*The Gauge does not contain an oxygen sensor.
Oxygen sensor type: Narrow band.
Oxygen sensor output voltage: 0~1 V.
These gauges utilize high-precision stepper motors which require electrical power to reset the pointer position. It is completely normal for the pointer to stay off-zero when the vehicle is turned off.
No, the package does not include an oxygen sensor. You will need a narrow-band oxygen sensor with an output voltage of 0~1 V to work with this gauge.
The EGT sensor included in the package uses a standard 1/8 NPT thread size connection.
The Boost Gauge measures pressure levels ranging from -30 PSI up to 30 PSI.
Yes, every gauge package includes a dedicated and detailed English instruction manual to guide you through the setup and wiring process.