all an intercooler does is cool the pressurised air from the turbocharger - it does not induce more air in itself.

you may see a slight increase of 1 or 2 psi at full boost, this is due to the charge been a lot cooler due to the more efficient cooler - if this worries you, adjust the actuator to compensate this marginal increase to what it was running before you fitted the hoooge intercooler.