Re: 2 vs 1 air/fuel gauge
http://www.rpmoutlet.com/mt.htm
At one time I even found a O2 Sensor that had two pigtails.
One that provided high-band signals for a gauge and/or data recorder; and a pigtail for the low-band signals to the ECU.
Remember - the ECU reads voltages from the lowband sensor and adjusts the fuel maps accordingly.
If you install a high-band sensor - and it's calibration differs from the factory low-band sensor - and you attempt to tweak your ECU using readings from your new gauge.......you will need to know the signal offset between to the two sensors.....I think that's the idea of using the same O2 sensor for low and high band signals..
Just a thought..
Last edited by BrianBrave; Jul 18, 2008 at 12:53 PM.