Ok, you could be talking about one of two things. Either your talking about a turbo that is water cooled or not water cooled, or your talking about a kit that comes with a normal Air-to-air intercooler or a water intercooler. Once you specify which one your talking about I think you will get a little more help.

If your not sure what I'm talking about, maybe you should take a step back and rethink the whole turbo thing since this should be a very basic thing to know for someone wanting to turbocharger there car...