1. Performance:
- A cold air intake system works by drawing cooler, denser air into the engine. This can help to improve combustion and increase engine efficiency.
- Cooler air has a higher oxygen content, which can lead to better fuel burn and potentially increased power output.
- However, the actual performance gains may be subtle and may not be noticeable in all driving situations.
2. Mileage:
- A cold air intake system can potentially improve fuel economy by reducing the engine's workload.
- Cooler air can help the engine burn fuel more efficiently, which can lead to better mileage.
- Again, the improvement in mileage may vary and may not be significant in all cases.
3. Best Cold Air Intake:
- Choosing the best cold air intake for a 2002 Toyota Forerunner depends on various factors, including the specific model and engine variant.
- Some popular and reputable brands include K&N, AEM, and Injen.
- It's important to research and select a cold air intake system that is specifically designed and tested for your vehicle.
- Proper installation is crucial to ensure optimal performance and avoid any negative impacts.
Note:
- Before making any modifications to your vehicle, it's advisable to check with your local emissions regulations and any warranty terms that may be affected.
- Consult with a qualified mechanic or automotive professional if you have any doubts or concerns about installing a cold air intake system.