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5 Engine Modifications to Improve Performance


4
Air Filters
You can add a secondary air filter to what's already in your car to improve efficiency.
You can add a secondary air filter to what's already in your car to improve efficiency.
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Aftermarket air filters allow for more airflow into the engine for a more efficient use of the air/fuel combination, while also blocking contaminants and impurities that slowly degrade performance over time. Secondary air filters are generally made up of a thin layer of cotton or other material housed between several layers of impurity-catching thin mesh. High-quality aftermarket air filters (versus the standard, paper-based ones that come straight from the factory) drop into the engine's air box, and that's about it for installation. And because they're made of fabric, they're washable, making for an inexpensive, reusable performance enhancer.


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