[19Nasty1le]

I just got my car back from a build and they installed a P3 gauge and set the AN.1 to be reading in Lambda, but it’s reading like 1.500 at idle and when cruising it’s constantly jumping all around, when I did a pull it was showing .500. Anyone had this issue or know maybe what sensor or setting could be checked / adjusted to make this read correctly? Also have been getting a P0340 code now and the tach will just lose track of the rpm at times and do its own thing.

Here’s a clip showing what it does : https://youtube.com/shorts/mytX8ltyD...O1dO2Ahdr1MbiO