Consistent ignition energy is vital when tuning the 1.5 3-cylinder engine for higher boost levels. As you push your Mk8 Fiesta ST on the track, factory ignition components can struggle to keep up with the increased cylinder pressures. Eliminate spark blowout and ensure clean, powerful combustion across the entire rev range by upgrading to heavy-duty Coil Packs, providing ultra-reliable spark energy for high-output setups.