Frustratingly those cheap OBD dongles (ELM327 clones) seem to be mostly designed for diagnostics. They effectively run a regex over all the canbus data and tell the computer what matches.

However they can't match and forward everything (not enough RAM) and miss loads of packets, which makes them useless for things like reflashing firmware or interfacing with OEM tooling.

So what odb should I use to start reverse engineer my TCU from a old 2006 ferrari? These tcus are hard to come by. I wish I could replicate it's behavior. Not sure if that is possible. I think i can do it