How does an intercooler works?
Using a well-designed medium cooler can give you an extra 5% to 10% power.
There are also some cars that use a top cooler to cool air through holes in the hood, therefore before the car starts, the cooler will only be blown by the hot air from the engine room.
Although the heat dissipation efficiency is affected, because the intake air temperature will increase in such a situation, the engine's fuel consumption will drop a lot, which indirectly reduces the engine's working efficiency.
However, for a powerful supercharged car, the unsteady start caused by excessive power will be relieved under such circumstances. Subaru Subaru's Impreza is typical of an overhead intercooler.
In addition, the biggest advantage of the overhead intercooler layout is that it can effectively shorten the stroke of the compressed gas to the engine.