I have a Raptor. You probably read my post in the Eco thread where the guy was questioning the quality of SW products. I posted only to say I was happy with their product. Sorry I can't be more help with your Eco.
I saw in a post that you stated you had a full Stainless Works exhaust system. Did you do the downpipe along with the catback exhaust? Is your downpipe catted or the offroad? Did you go with the Stube catback system? Do you have any sound clips? Did you have any issues with CEL error codes or anything else? I have a 2011 fx2 ecoboost and I am looking at doing the offroad downpipe with the Stube exhaust and would like to hear some feedback. I have seen the video on their website but was just curious what you thought about them. Any advice would be greatly appreciated.