> Tuners knew all about this shit because they disassembled ECU code and looked at ROM formats. They could point you right to the table used for when the ECU thought it was undergoing emissions testing.
I guess the EPAs awards aren’t that great.
I wonder if they also run cars sloppy when it detects something that resembles a drive-cycle for fuel economy testing. e.g. Stop charging battery. Limit A/C or turn on mild heat to reduce radfan load. Limit power steering force. Dim lights 10%. Limit acceleration (gotta be a big one).
Probably enough data out there to identify offenders by comparing real world fuel economy data to official fuel economy.
The fuel tests basically already do all that as protocol. Accesories off. Accelerations are specified and extremely low (I think it was something like 30 seconds to accelerate from 35 to 55).
I guess the EPAs awards aren’t that great.
I wonder if they also run cars sloppy when it detects something that resembles a drive-cycle for fuel economy testing. e.g. Stop charging battery. Limit A/C or turn on mild heat to reduce radfan load. Limit power steering force. Dim lights 10%. Limit acceleration (gotta be a big one).
Probably enough data out there to identify offenders by comparing real world fuel economy data to official fuel economy.