AFR gauge reading for wideband in Tuner Studio
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My AFR gauge is always pegged to the max. See screenshot below of my 95 idling in the cold.
![](https://www.miataturbo.net/attachments/megasquirt-18/154966-afr-gauge-reading-wideband-tuner-studio-80-ts_idling_9c9bce296172705f2148de251cecce022e4b6003.gif?dateline=1447527931)
Details of my set up.
MS 12V -> DB15 PIN 1 -> LC2 red
MS GND -> DB15 PIN 2 -> LC-2 black
MS SIGNAL GND -> DB15 PIN 3 -> Unused
MS O2 -> DB15 PIN 4 -> LC-2 yellow
![](https://www.miataturbo.net/attachments/megasquirt-18/154966-afr-gauge-reading-wideband-tuner-studio-80-ts_idling_9c9bce296172705f2148de251cecce022e4b6003.gif?dateline=1447527931)
Details of my set up.
- I removed the stock narrowband from its bung and put the wideband Bosch in its place
- I have not altered the stock ECU wiring harness
- I chose wideband when I created my project
- In the calibration settings I chose wideband from the drop down
- Neither of the 4 pin IN/OUT connectors are hooked up
MS 12V -> DB15 PIN 1 -> LC2 red
MS GND -> DB15 PIN 2 -> LC-2 black
MS SIGNAL GND -> DB15 PIN 3 -> Unused
MS O2 -> DB15 PIN 4 -> LC-2 yellow
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