Code 24 and 31 are to be expected unless you power the MAFT Pro BEFORE the ECU. I've covered this on my website and provide a wiring diagram how to power the MAFT Pro before the ECU. Take some time to go through what I have up on my site *thoroughly*.... A lot of your issues may be explained.
As for the code 34... It's not reliable as you're tampering with the airflow signal. Code 34 is based on airflow and RPM. With the MAFT Pro improperly tuned or setup the airflow signal could easily be well out of the "acceptable" range.
Yup, still need a bin and log...
I hope you've disabled PTT (Part Throttle Tracking) and AFR Tracking as I previously instructed.
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