If your engine is producing excessive air through the exhaust, there are a few potential problems that could be causing this issue:

1. Leaking or cracked exhaust manifold: The exhaust manifold gathers exhaust gases from the engine cylinders and directs them into the exhaust system. If there is a leak or crack in the manifold, excess air may be escaping before it reaches the exhaust system, resulting in increased air flow.

2. Faulty oxygen sensor: The oxygen sensor is responsible for monitoring the amount of oxygen in the exhaust gases, which helps the engine control the air-fuel mixture. If the oxygen sensor is malfunctioning, it may incorrectly signal the engine to increase the air-fuel mixture, resulting in excess air flowing through the exhaust.

3. Leaky exhaust system: A leak or hole in the exhaust pipes or muffler can allow extra air to enter or exit the system, causing an increase in airflow. Check for any visible signs of damage or corrosion along the exhaust system, such as rust holes or loose connections.

4. Engine misfire: A misfiring engine can result in unburned fuel and excess air traveling through the exhaust system. Common causes of engine misfires include faulty spark plugs, ignition coils, fuel injectors, or a malfunctioning ignition system.

5. Incorrectly sized or installed aftermarket components: If any modifications or aftermarket components have been installed in the exhaust system, such as a high-flow catalytic converter or a performance muffler, they may alter the air flow dynamics and potentially cause increased air movement.

It is important to note that diagnosing and repairing exhaust system issues can be complex, and it is recommended to consult with a professional mechanic to correctly identify and resolve the problem.