The SC I had on a Honda K20 in my Lotus used a air/water charge cool system. Small cooler core after the SC which was connected to a rad at the front of the car and used an electric pump to circulate the fluid. Worked well, even though the SC was actually being 'over driven' and so stuggled with efficiency at high rpm.

Still, it managed to get close to 380hp from a 2 ltire 4 pot!