Sorry it's radiators again

Sucking hot under-hood air (I have TTIs and Alumunum heads), I had trouble with consistent idle quality, so in about 2006,(I'm guessing), I cut a hole in my hood, and since that day my idle and low-speed problems have been over.
Int.eresting you brought this up..... we are pretty much at the same spot and have concluded the generally high under hood temps are causing issues in the air-fuel mix. Some sort of cool air intake will be coming along. Getting the excess hot air out from under the hood is more of a challenge when you don't want a hole in the hood.