There is only one file type that uses the .LGF extension:
PMSCAN Log File
Data file generated by PMSCAN, an OBD-II scanner used for analyzing vehicle performance and diagnosing problems; supports over 220 generic OBD-II parameters and diagnostic trouble codes (DTCs); test results can be viewed in a a graph or table format within PMSCAN.
|Palmer Performance PMSCAN|
Updated: July 3, 2009