Will an S&B Intake Improve My Fuel Economy?

Quick Answer

Yes — an S&B Cold Air Intake can help improve your vehicle’s fuel efficiency under normal driving conditions. Factory air boxes and induction tubes often create airflow restriction. By reducing that restriction, S&B intake kits help your engine breathe easier, which can lead to smoother performance and potential MPG improvements.

However, actual fuel economy gains will vary depending on several factors — driving habits, vehicle modifications (like exhaust or tuning), load, and environmental conditions. While increased efficiency is possible, many drivers enjoy the added performance so much that spirited driving can offset those fuel savings. In short: better breathing can improve MPG — if you let it.

The Details

When you increase airflow to the engine, the computer automatically adjusts fuel delivery to maintain the proper air/fuel ratio. S&B intake tubes are precisely calibrated to work with your vehicle’s Mass Airflow (MAF) sensor, allowing the ECU to adapt instantly — no tuning or reprogramming required.

By reducing intake restriction, the engine doesn’t have to work as hard to draw in air. This can lead to improved volumetric efficiency and reduced pumping losses — both key contributors to better fuel economy during steady driving. However, at wide-open throttle, your engine will make more power and therefore consume more fuel compared to stock. The end result ultimately depends on how you drive.

How We Back It Up

Every S&B Intake Kit is tested in our $500,000 climate-controlled ISO 5011-certified lab — the same performance standard used by OEM manufacturers. We publish two key test results for transparency:

  • Airflow Rating: Measures how much restriction we reduce compared to the factory intake. Higher airflow improves efficiency and throttle response.
  • Efficiency Rating: Measures how well the filter protects your engine. All S&B filters achieve a minimum of 99.00% filtration efficiency, ensuring performance without compromise.

You can find specific test data for your intake kit on the product page. → View S&B Intake Kits and Test Results