Well so far I've just been cleaning it up and debadging it etc... The plastic on the center console has about a billion scratches on it so I've been attempting to polish those out.
As for performance probably just the "usual". Tune, Intake, Plugs, Thermostat, 3 Bar...maybe downpipes eventually.
Right now I've just got a K&N drop in and am debating about just going that route for now and selling my modified airaid with cover. Would probably go MDesign eventually.
I got the car from the dealer and while they claimed they put in premium I'm guessing it was mixed with crappier gas because my LOR is currently only at -.67. I put a half tank of 93 in it and a bit of E85 to help get things going in the right direction.
I have to say I really love 2013 features over the 2011 so far. It's a lot of little stuff and nothing that would have made me want one (if it wasn't for my PTU issues) but still nice to have. The biggest improvement so far has been the brakes! I'm not sure it actually stops better than my 2011 with EBC pads and rotors BUT the pedal improvement and modulation of the brakes is outstanding (relatively speaking) - can't wait to get rid of the junky stock rotors which are already showing some signs of warping when braking down from high speeds.
I finally figured out what "sport" mode is on the 2013+...I had a "sport" mode on the 2011 for advance track on the Performance Package and I still have it on the 2013 but now I also have the "sport" mode that affects the transmission settings (holding gears etc...) and I have to say I really like it. I was always wondering what everyone was talking about with "sport mode" locking out 6th gear and holding gears longer etc...LOL.
MyFord Touch > Sync all day long. My backup camera actually comes on in time to go backwards out of a parking spot due to the low boot up time.
I'm also going to enjoy reading tire pressures in Torque and who knows what else I can find. Should be fun!
...and finally - NO FREAKING PEELING CHROME TAILIGHTS... I will not miss those things.