hahah, it would be a bad to spray c02 into your intercooler, not only will your car run lean but it woudlnt be as flamable, you would best off putting oxygen into you airflow meter, that would feed into your turbo, effictivly cooling your inlet turbine, and allowing the AFM to read the oxygen that is passed into your engine.
as far as wanting your car to purge, jsut buy nos for gods sake and get a propper purging system.
also purple is ment to be a poofter colour.