Since I haven't found any accurate and permanent info pages about 1.07, I started making my own and while checking out Gore Rider I discovered the following:
ItemMod2Code: bloody
ItemMod2Param: 1
ItemMod2Min: 1
ItemMod2Max: 1
It doesn't show any extra attributes in a screenshot of the item, so what does it do? In newer patches, Gore Rider lost this mod but it appeared on a few others instead.