Well, based on opinions here, I'm gonna remove it and see if I notice a "difference" without it.
I will keep the rear brace on though as I did notice a difference with it on...of course I just have to finish drilling those holes
Looks like another waste of money from sho shop. BTW. I bought the y-pipe from them and the rear flange just broke off. I think they have some quality control problems. I don't think they are iso 900X certified.