CAI for SE
 

Just bought my Sonata SE (2012) and it has pretty good pickup, but since I have a Roush Mustang and a V8 Explorer I like to tinker with the engine and get the most out of it.
Has anyone installed a cold air intake (CAI) on their Sonata yet?
Who'd you get it from, how much and how does it run?
Does anyone have a tuner on thier car?
What about a subwoofer for those of us who have the standard radio?

Thanks for your time,

Jack