you will gain whatever is lost due to pressure loss in the stock IC, thats all.
an IC cant add boost. boost is ecu/wastegate controlled. you may see 1-2 psi though. from what i have seenm the stock IC has about 3psi of pressure loss. if the new one has only 1psi of loss you will see an increas of 2 psi.
but at the same time the lower the pressure drop across a core the less efficient it is at cooling. it is a trade off.
an IC cant add boost. boost is ecu/wastegate controlled. you may see 1-2 psi though. from what i have seenm the stock IC has about 3psi of pressure loss. if the new one has only 1psi of loss you will see an increas of 2 psi.
but at the same time the lower the pressure drop across a core the less efficient it is at cooling. it is a trade off.