Check out Torqued Performance
and/or Phatbotti tuning
. I'm not sure if Eric (TP) has maps for the 2013 models yet, but a quick email to him should tell you what you need to know. As for Phatbotti, send them a PM on here, they will get back to you.
Phatbotti has a lot of happy customers here on NASIOC, a quick search will show you.
Torqued Performance has a lot of happy customers as well (including me). Eric responds quickly to emails and questions.
Catless 3" DP
Nameless Performance axleback
Torqued Performance Stage 2 tune (via Tactrix)
Hope this helps!