Before you start screaming hear me out.
I have been using the python coding language on a daily basis for a couple of years now and once in a while I stumble across scripts that supposedly allow you to access car diagnostics ... etc., now I've never tried it out but it got me wondering to what extent I might be capable to access and modify ECU maps with a standard laptop and some coding skills.
Obviously I would first need to wrap my head around how ECU/map "files" look like and interact. Any idea where I can find information on that, or more generally information on the ECUs that have been used (i.e., manuals)?