Comment by irishcoffee

J1939 is really all most consumers need to care about when it comes to their personal car CAN data.

https://github.com/Konik-ai/j1939_dbc/blob/main/dbc/j1939.db...

There are a ton of dbc files floating around like this. Almost any car with a turbo has a kit to flash the ecu for more boost, so even the proprietary signals have been reversed.