Originally Posted by Siber Express

Actually the Shorties are offering a lot of pick up in the low to mid range and you do get a deeper tone with them. The beauty of them is you can keep your Factory cats.
You can also get a cut and clamp X-Pipe for it and get rid of the Hybrid X/H pipe that is stock..
As long as you run stuff that does not require a tune you can return to stock before having to run it through Emissions and would not have to remove it before taking the car into Ford for service or warranty work.
Just things to think about.

Originally Posted by whosniffedme

Welcome to the crew! With axlebacks, a cai and tune, you should be able to pass emissions no problem whatsoever. The tricky part comes into play when you start messing with the cats. I just went through that headache, ended up registering my car in a county that doesn't do emissions just to save the hassle. In short: go for it.