When the turbo compresses air it makes heat. I have neveir measured this engine, but, on old school stuff like the Cummins C series, pre 1991 product, w/o CAC, 210 hp, the compressor outlet temps were around 250 degrees making only 12 pounds manifold pressure with around 75 degree ambient temps. Intake manifold temps stayed around 248 degrees. After the air to water aftercooler was installed, the post cooler intake temps were hovering around 185 ish depending on coolant temp. The test engines had air operated clutch type fans so the coolant temps would modulate from 195-200 down to 185. Adding the aftercooler made the engine work better under a load and the HP actually was better by about 10 on the dyno and stayed stable.
Point being, ANY cooling you can get that will bring a compressed air intake temp down closer to ambient will help the engine. Without the intake cooler, under a sustained load, the intake temps continue to rise and HP falls off. Unless you are gonna be using the truck for heavy haul, every day, stock will do just fine.
And no the intake on a n/a multi isn't there to cool a charged intake...there isn't any. It's primary function is the opposite. It is there to warm the intake air in cold ambient temps to prevent low power and white smoke. Cool intake air is good, cold is not. In a compression fired engine really cold intake air won't support the combustion process very well.
