The phrase refers to a collection of components designed to remove the Active Fuel Management (AFM) system from a 5.3-liter engine, typically found in General Motors vehicles. This kit often includes a replacement camshaft, lifters, valley cover, and other necessary hardware to ensure proper engine operation after the AFM system is disabled. For example, individuals seeking to improve engine performance and reliability might consider such a kit.
The removal of the AFM system can offer several advantages. Potential benefits include enhanced engine responsiveness, elimination of the AFM-related failure points, and the opportunity to upgrade to a higher-performance camshaft. Historically, AFM systems were introduced to improve fuel economy, but they can sometimes lead to mechanical issues. Consequently, aftermarket solutions arose to address these concerns and provide alternatives for optimizing engine functionality.