good oil (Mobil 1, Rotella-T etc etc) , good wires like Magnacores unless your already on COP, new NGK BPR6es's or 7es if your making a bit more power., a decent filter, i would go ahead and change the fuel filter, and one of those little fuel system cleaners to help clean the carbon build up on the valves. might as well check all your lights while your there, (Brake/corners/3rd brake light)