For your turbo application, a dry kit would be best. A 25-30 shot dry will significantly reduce the temperature of your intake charge, and can produce upwards of 50 whp easily just on cooling effects. If you are using a front mount IC, nitrous express makes an Ntercooler, which is a ring with holes in it that sits in the bumper in front of the intercooler. It uses either CO2 or N2O sprayed on the intercooler to cool the intercooler and thus the intake charge.