modern intake manifold designs are becoming increasingly sophisticated as manufacturers aim to balance power, fuel economy, emissions, and drivability. These considerations are also important when selecting a replacement engine because an engine with the correct specifications can perform differently if its intake system is incompatible or improperly configured. https://carenginepart.com/how-engine-intake-manifold-design-influences-airflow-combustion-efficiency-and-replacement-engine-performance-in-2026/