The Go Fast Bits VTA Valves T9488 are high-performance valves designed for use in turbocharged engines. These valves are specifically designed to improve boost response and reduce turbo lag, allowing for quicker acceleration and improved overall engine performance. The VTA (Vent to Atmosphere) design of these valves allows for excess pressure to be released directly into the atmosphere, rather than recirculating it back into the system. This results in a distinct and aggressive turbo sound, adding to the overall driving experience. The T9488 model is compatible with a wide range of vehicles and is made with high-quality materials to ensure durability and longevity. These valves are a popular choice among car enthusiasts looking to enhance their vehicle's performance and sound.