Wideband UEGO Air/Fuel Sensor

Kendog 170 said

I tried a few tests for vacuum leak but could not find one. My gut still tells me it is. Car ran good before rebuild with the AVS. Kept most everything the same but 20 KB pistons and Eddy heads. Compression is all about 160 +or- 3 psi.

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Does the gage read anything in free air?
The sensor can handle it. Whether the gage will show it I don't know.
That's how Innovate has the user check calibration on periodic basis.

Now that I typed that, I realize that at least with the LM1 & 2, the free air check shows percent oxygen - not AFR.


Maybe @TrailBeast can explain how its done with the gages.