Originally Posted by bbywu

I can think of only one way to wipe an ECU...to bench flash it and reprogram it with PIWIS (like when you create a cloned ECU.) Only a handful of people have this capability. If I remember correctly, the hours of use, Imob code, and other data are stored in a separate chip outside of the 29F800 chip (which holds the data programming for the engine files.) Info stored outside of this is what is looked at with PIWIS during a vehicle analysis. The data stored here must be rewritten or changed differently than how flashes are uploaded to 29F800.