The engine is the heart of your Challenger — every performance mod either helps it breathe better, burn fuel more efficiently, or force more air in. These upgrades range from simple bolt-on air intakes to complete supercharger kits. Even small changes to how air and fuel get into the engine can make a noticeable difference in how the car feels.
Ignition coils transform your car's 12-volt battery power into the 40,000+ volts needed to fire the spark plugs. Stock coils work fine for stock engines, but higher-performance coils deliver a stronger, more consistent spark — which means more complete combustion, especially under boost or with larger spark plug gaps. The HEMI uses coil-on-plug design (one coil per plug, 16 total on dual-plug HEMIs), making swaps straightforward.
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