i had my older unit fail on me, talked to dyno jet told them the issue and told them i was not the origanal purchaser of the unit and it was out of the 1 year warrenty, they told me to sent it in anyways. after the 1 week trip there they called said the unit was just bad and they were going to replace it free of charge. I have notting bad to say about that company, there products rock and there dynos are nothing short of awsome. i wouldnt feel bad about buying a used one. great company great product great people. :thumb: