the patriot already has a CAI, it takes are from right at the front edge of the hood. You cannot get any better than that.
I have yet to actually see somebody do a before/after dyno of doing a CAI on a patriot, but I bet it has exactly 0 change in performance. These engines are very closely controlled by the electronics, in fact the throttle itself is not even controlled by your foot, its controlled by a computer brain, so the position of your foot on the throttle tells the computer how much fuel/air mixture you want, and then the computer figures it out. Even if a "CAI" (they are usually anything but, since they tend to pull air from behind the radiator) can pull more air, the computer system still controls how much of that air actually gets to the engine. so a CAI/exhaust/magic fairy dust does NOTHING until somebody actually does something about the computer software. Once again, I have never seen someone actually tune these engines, The ECU is locked up like lindsay lohan. My parents have a suzuki Kisashi with the exact same cvt/ 2.4l world engine. It has more HP because they tuned it differently, and the ecu on that is open, and tunes can be found from across the ocean. and you can get a bit more HP from them, not much though.
Things you can do to ACTUALLY affect performance:
1) Reduce weight. the less weight your engine has to pull around, the better. Yank the back seats out, ditch the spare tire, radio, interior plastics, sound deadening materials, carpet, etc.
2) Skinnier tires that are lighter than factory tires. Unsprung mass is a performance killer. big wheels and fat rubber kill performance. Usually you find these are cars with excess power. On cars that are light on power, reduce that unsprung mass!
3) keep up on tune ups and the like. Fresh oil keeping friction down, proper spark plugs on recommended change intervals, etc.
4) purchase an aftermarket ECU and pay for a custom tune (cost will be in excess of $5000). probably not worth it for the 10-15 extra horsepower you'll get.