Please help. 2013 1lt v6 upgrades
 

I've got a 2013 3.6l v6 lt1 automatic. It has the lfx engine and I was looking for some information on recommendations for performance upgrades. From all the research I've done, all I've come up with is installing a flowmaster catback exhaust and a KBR CAI. I also live in California so due to the b******* smog regulations. I've gotta deal with that.