Yes, ditch those heavy steel wheels if you haven't already. Get some lighter wheels on there (perhaps some shorter tires), and it will make a world of difference.
I also ended up with a 2013 2LS, unfortunately they are the factory economizer and you are already at a disadvantage compared to the 1LS, 1/2LT cars because the 2LS has a 2.92 diff ratio to achieve that EPA rated 30 mpg hwy, while all of the other cars auto's got the 3.27 gears, and manuals got the 3.45, which is why I mention shorter tires because it will act like a lower (numerically higher) gear ratio without switching any expensive parts, it will however make your speedometer read slightly off depending on how short you go.
A good cold air intake, and some high flow cats will be worth the $$, but IMO lighter wheels, and shorter tires will be the best bang for your buck. After those, a ported throttle body is also worth while. After that if you still want to go faster, it's all in how much money you want to throw at it. Weight reduction is the best friend of a 2LS car. Shed as much weight as possible.
Specializing in attractive "no drill" front license plate brackets for the 2010+ Camaro Check out our new website! www.jacfab.com
2010 Camaro 1SS RJT w/ SIM Stripes; M6. 12.535 @ 112.33mph SOLD!
2013 Camaro 2LS SW w/ IOM Stripes; A6
. 14.786 @94.15mph
Bone Stock. 14.605 @ 95.15 JacFab No-Drill front license plate bracket
, JF Ported LFX intake, JF LFX intake spacer.