If over 100K miles!
AIR -
Air filter (K&N), clean MAF/IAT sensors, and connectors with CRC MAF sensor cleaner, and use dielectric grease for all electrical connections.
New upstream H02 sensors, and save the old ones for down stream spare.
FUEL -
New fuel filter
Fuel pressure test
Ignition -
New plugs + wires, and dielectric grease on spark plug connections.
Exhaust - Make sure your catalytic converters are not plugged.
Correct - Air pressure in tires
AMS Oil is expensive, I would consider moble 1 from Walmart..