When your vehicle is properly tuned, the ignition system, fuel system, emission system, and computer system are all working together in perfect harmony. When they are not, you need a tune-up. As part of a tune-up, we'll check, and replace as necessary, your spark plugs, ignition coils, distributor cap and rotor, and ignition wires. Afterward, you'll enjoy improved vehicle performance, and likely save money at the gas pump.