Quick view Mishimoto Mishimoto 15+ Ford Mustang EcoBoost 2.3L / 12-18 Ford Focus ST Ignition Coil Set of 4 - MMIG-FOST-1204 Compare $243.70 $208.99 The basic requirements for a properly running engine are fuel, air, compression, and spark. Before cranking up the boost in your EcoBoost, it is wise to ensure all maintenance is up to date and these processes are performing as intended. Weak spark from... Add to Cart Add to Cart