Issue
ElumTools uses a tool built into the Revit API called the Analysis Visualization Framework (AVF) to display the calculation results in Revit. At the time of writing, Autodesk doesn't provide a way to display AVF results in AutoCad.
Solution
It is possible to export the ElumTools results to PDF or image files, which AutoCAD supports importing.
- Export the scaled view to DWG. File --> Export --> CAD Formats --> DWG.
Working in the same View as step 1, hide all Model and Annotation Categories in Visibility Graphics as show below. Enable the points by clicking the View Results command and Import into AutoCAD as a raster image, scale, and position it in front of the background. 
