Stealth Turbo Heat Shields retain heat inside the turbo. Retaining heat can lower under-hood temperatures up to 40 percent. In addition it can reduce chatter, lag, increase boost (in some cases), and reduce heat damage to other engine components. The custom turbo heat bag uses the same extreme rated technology as our HP Turbo Shields, but they have a new cool "Stealth" appearance. Capable of withstanding 1800F continuous, our turbo heat shields are designed for street performance and even the most hardcore racing applications. The custom fit design means you do not have to trim or fit the heat shield blanket to match your turbo housings, making installation a snap. Turbo removal is not necessary in most cases. Includes stainless steel springs to be used with anchors to hold turbo shield in place.