Anyone here has a Q chip installed? Im getting mine within a month and would like to know more about it. 1st,would it be detectable,so lets say i have to go to VW dealer n they void my warranty. 2nd my brother worked on passats before and said this chip will actually give better MPG even with the HP increase. Did any of you have any problems after installing them?

Also is it possible that it gains 50 HP??