Components and add-ons designed to enhance or modify a vehicle's turbocharging system. This includes parts like upgraded turbochargers, intercoolers, blow-off valves, wastegates, and boost controllers, all aimed at increasing engine power and performance. Accessories such as turbo timers, boost gauges, and heat shields are also included, which offer monitoring and protection. These items are typically sought by enthusiasts looking to improve their vehicle's acceleration, responsiveness, and overall power output.