Yes, I went that route also, they did stay cooler initially, but heated up after time anyway.
That is why I was thinking of the copper tubing wrap UNDER the insulation wrap that would circulate near-ambient water
via the cheapie pump and the mini-radiator. Just a thought.

In this simple diagram, the copper tubing would be tightly wrapped around the CAI, then covered with heat shield.
The H / E ( heat exchanger ) would be located somewhere in the ambient airflow.

BTW, this is N/A talk, all you SRT6 pukes don't get excited ......