not sure if I can answer you question or not, but I will try. I have an Air to water on my Radix and I get still get very High AIT's, might be because I am spinning the crap out of it but who knows. Now I have friends that have Turbos with Air to air and are getting at or below ambient temps with Meth. I even have a friend that has a whipple with a fab'd up Air to Air and see's very low AIT's

sure your temps will rise when sitting in trafic but will go down quickly once you start to move.
Hope that helps,
Mark