The best intake would be a AEM V2. Which is about 200-300$.
The next best would be a eBay CAI. Which is about 20-50$.
The AEM would give you about .5 more HP and .1 more TQ and alil better sounding.
If you want more performance with sound go with the eBay CAI and tehn get a catback and headers of eBay too with teh money left over
Also, welcome to DSMTuners.
Heres a link to the 2gnt tech guide.
Tech Guide: 2G 420A Power Upgrades - DSMtuners