well i heard 2 things if you get only bolt on things you cant void the warenty also this guy at a custom audio shop told me if i went to a performance shop and got anything done to the engine that by law it cant void the warenty they say it does but they cant do it and if they do you can sue them so imma talk to nissan and find out the deal cause if you can do bolt on things to keep the warenty then them 4 things are all bolt on