air to water intercooler fan

[SgtMarshal]

how much difference will a fan make when installed in front of or behind a heat exchanger for an air to water intercooler? this is the one I'm looking at, and I would probably run 2 of them:

http://www.frozenboost.com/index.php?products_id=1024

 

[Slick2500]

Over 9000

 

[J57ltr]

At 3 amps run as many as you can.