Talk:Engineering Lab/@comment-67.253.177.75-20120901163743/@comment-4557698-20120901211859

Read the page. They increase chance by 20/60x.

I.e. chance is 1 out of 100. Use a manufact patch, it gets to 20 out of 100. Use a mod patch, it gets to 60 out of 100. That is, according to Kabam's description.