I just recently started direct serial logging. I used to log from the ecu but the signal was intermittent. The direct serial was working just fine for two minutes and then it would start acting very buggy. I posted a picture of the datalog playback above. What would cause this signal to stop coming through the way it should. I wonder if its the serial to usb converter?

 

Like I mentioned, check the advanced settings (Latency). If both of your signals from this wideband have been intermittent... You probably have a problem with it. Contact the manufacturer to see what they suggest. Test with their software as well.