Grimmspeed Turbo Heat Shield V2 For Subaru 02-21Turbo EJ Engines GrimmSpeedGRM 092007 Minimize Heat Soak with the GrimmSpeed Turbo Heat Shield! The turbocharger is one of the hottest components in your engine bay and can have some really negative effects on its surroundings. As it gets red hot, it also heats your intercooler and the charge air going through it into your engine, resulting in a loss of power. In stock form, the turbo is covered by an OEM heat shield, however this heat shield will not fit with most aftermarket