that's not possible on any of the standard cosworth ecus greg, although they can be modified to run 2 different chips that can be switched over but it's very rare.

even on the pectel modified ecu's with the 12 position boost pot. do not run different maps as such. the controller is just a potentiometer with 12 preset positions with different resistances so that the ecu sees a different voltage across it as in input and can use that to set the output to the boost control valve (normally used with air injectors instead of the std. SCM valve).