A standard air intake box by itself is unlikely to cause over fueling in a modern engine. However, if there is a problem with the airflow sensor or the mass airflow sensor (MAF sensor), it can cause inaccurate readings and lead to the engine receiving too much fuel, resulting in over fueling. Additionally, if the air filter is clogged or dirty, this can restrict airflow and cause the engine to run rich, resulting in over fueling. It is important to maintain the air intake components to ensure proper engine operation and fuel efficiency.