lots of oem low boost turbos have no or very little intercooler.
All that happens is you get less power by not having one since the computer will retard the engine when you get up to detonation, which will happen at a lower power level than with an IC. use an IC with water/methanol injection or LPG and N20 ( if you're crazy ) the idea is to get rid of the heat that the compressor added.

since nobody said it yet ;)
don't IC a suck through ;) it should be obvious why... i just have to someone always post about not doing this...

some IC's use water and have a mini radiator somewhere else, this has some advantages...