The K&N 57-1546 Fuel Injection Performance Kit Gen2 is designed to increase horsepower by up to 10% for most street legal vehicles. It provides an estimated 7.35 HP gain according to the manufacturer and comes with a million-mile limited warranty. The kit is easy to install within 90 minutes and can last up to 100,000 miles before requiring service, depending on driving conditions. Related recommended products include a throttle body spacer, engine module, truck bed rails, and shock absorbers.