[tholyoak]

All the maps are in the PST2/PIWIS, anybody (like myself) who has these tools can reflash the DME as long as the DME code is provided. I doubt a dealer will do it for you, as it is not legal for street use to run the ROW program here in the US.

You don't 'chip' these cars, they are reflashed with new maps by aftermarket tuners the same way the different factory maps are flashed, through the OBD port. Thus if you put an aftermarket 'chip' in there, it will overwrite your ROW map. Thus you would need a 'performance' map that also ignores the after cat O2 input.

-Todd