the idea of the intercooler on a NA probably does work, it doesnt create heatsoak, the intercooler is probably doing its job which is to dispurse the air across the core of the intercooler while using the bars and fins to cool down the incoming air, and while i imagine it does keep the air charge cooler and lower air intake temps. it probably is acting as a bottle neck for the intake becuase it doesnt have the velocity of flow going through it as you do with a turbo engine, not does it have the volume of air flowing through it to make it efficent, so does it work more than likly is it actually doing anything probably not