If there is nothing mechanically wrong {missing or modified emissions related componet(s)}with your vehicle and it has not been tampered with we guarantee that the vehicle will pass any state emissions test after a TRI-MAXX2000 service or we will refund the cost for that service. Copyright 2000-2010, H.D.I. Management Inc. Nevada, USA all rights reserved, All logos, Trademarks, & Copyrights are property of their respective owners.