install Catback exhaust and a short ram intake

I have done this to a few Japanese 4 cylinders before with no problems. But I always ask the question. I have a 2003 Mitsubishi Lancer es. I am putting on Headers, a Catback exhaust, and a short ram intake. Is there anything I should also do when I make the installation easier or better?

I am also giving the car a full tune up with high performance spark plugs and wires.