Building a CAN data logger for a 2008 Citroën C5

Reading engine data over KWP2000 to find out why a V6 shudders at cruise.

A Raspberry Pi and a USB CAN adapter, logging engine parameters over KWP2000 on a 2008 Citroën C5. The plots showed the cam phasers oscillating around their setpoint, which pointed at the VVT solenoids.