TURBO BLANKET FOR VW GTI, GOLF R, GLI, AUDI S3, A38V1650 ESCRIPTION The COBB Turbo Blanket is designed to limit the amount of heat that is transferred from your turbocharger to your engine bay as well as keeping hotter exhaust gases that exit the system faster through decreased density. By limiting the amount of transferred heat, you extend the life of your under hood components, decrease intake temps, and improve the response from your car. Constructed with a fragmentized fire retardant volcanic