intercooler pipe to inlet/outlet, How does it effect? Options

[urbandork]

On my turbo set up im running 2" pipe.

The intercooler im looking at has a 2.5 inlet/outlet.

My question is what effects will i see by running an intercooler with larger inlet/outlets then the pipe that im running.

Should i see a big diffrence and if so in what presure drops, lag, ect, or will it not really matter.

[urbandork]

Yup already started to buy 2 inch pipe.

But if i shouldnt run into n e pressure loss or super lots of lag then ill just hook the 2 inch pipe up to the 2.5 inch intercooler inlet/outlets.

In my intro to aerospace class we studied airflow and stuff. And the way i see it as long as the inlet and outlet are the same size then the airflow rate should remain the same.

This is the idea behind intercoolers with different size inlets and outlets.