Pidfusion is a growing database of OBD2 operating data captured by users, uploaded and aligned with vehicle models with similar engines. The data is filtered for steady state conditions and PIDs are graphed side by side in a 1 to 1 ratio.

Currently Pidfusion works with csv files recorded with BlueDriver, Torque Pro, OBD Fusion, and DashCommand.

Automotive technicians, instructors, enthusiasts, DIYers, Researchers, Developers.

How to read OBD2 live data starts with knowing what known good looks like. As automotive technicians, we found that having a similar vehicle around to view its data, helps us to confirm or deny suspicions of any values that seem off.

Go for a drive, pull over and then upload your data log to Pidfusion. Now you can quickly compare many PID values at once, without having to go find a similar vehicle, and without even getting out of the driver seat.

As of right now, idle and cruise at 60 mph, with the vehicle at operating temperature.  In order for your data log to be accepted by Pidfusion, the vehicle must be able to reach at least 175 degrees farenheit, air conditioning and defrost off, at least 3 minutes in park or neutral, and cruise between 59-61 mph for at least 4 minutes. (preferably on a stretch of fairly flat and level road.)

Since the data is slow to update, we find the steady state data that is captured only if certain criteria remains constant for a certain amount of time. There is always a chance that communication during data logging may dropout with either the dongle, mobile device, or the vehicle itself.  Since this is a user created database, the commenting and voting should help us weed out bad data.