EVE400-122 / 400-122 - Application Notes The AIRAID intake for the Ford 7.3L Power Stroke diesel is our easy to install QF (Quick Fit®) series. This intake benefits from the CAD (Cool Air Dam) that keeps a dense air charge into the engine. There is also a provision to maintain the factory “Filter Gauge” that allows for easy filter monitoring. This ensures you’ll know when it’s time to service the filter for optimum performance.