I agree that the test is skewed. I would do the same if I were Banks. Anyhow, Banks is now offering some of their high-end performance parts to the public. I'm talking about mechanical parts, not just tuners and air boxes. They make good products and test the $hit out of most of them.
I do...
Everyone is right about the hanger. Just spray some type of lubricant on the hanger.
You will eventually throw a code after installing your exhaust. Particularly w/ a cat delete. I figure you will eventually be doing a cai box or the ppe mod soon too. The ecm doesn't care for that much air...