CREATE TABLE table_name_86 (tuner VARCHAR(255), governing_body VARCHAR(255), team VARCHAR(255), season VARCHAR(255), driver VARCHAR(255))
Who is the tuner after season 2004 with Gaurav Gill as the driver, Team MRF, and Mai governing body?
    
SQL: SELECT tuner FROM table_name_86 WHERE season > 2004 AND driver = "gaurav gill" AND team = "team mrf" AND governing_body = "mai"