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.
The fuel pump delivers gasoline from the tank to the engine. The stock pump has a maximum flow rate — if you're adding a supercharger or running E85 ethanol fuel, you'll exceed that limit. When the pump can't keep up, the engine starves for fuel under boost (called 'running lean'), which causes detonation and catastrophic engine damage within seconds. A fuel pump upgrade or booster is absolutely critical for any forced induction build.
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