Your Audi S4 is fast, no doubt about it. But what if you want to make it more efficient and resist damaging, power robbing heat around your turbo? One option is to install a turbo blanket. A turbo blanket helps to prevent heat from escaping from the turbocharger hot side, while keeping the cold side colder. This leads to faster spooling of the turbo and faster access to power and greater efficiency. It can also help to prolong the life of other engine bay components by protecting them from excessive heat generated by the turbo.