Fuel/O2 issue? posted by Jms90ttz on November 06, 2021 at 06:17 PM
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That is a Major undertaking.. Lots can go wrong under that intake.. I'd recommend you get a Conzult Interface Cable, and Conzult software for a W10 Tablet/Lap Top and start having a conversation with the ECU. It's rather eye opening, to watch the ECU reacting to the Sensors, and seeing the results on the Engine performance.
You can see O2 sensor values, and Bank Left to Right comparison. And cylinder RPM drop test