Here's the deal...I know I know, I said I wouldn't but...
On a daily driver where underhood temps get way out of hand, a cone on the TB will hurt you all the way around. When your radiator fan(s) kick on where do you think the 180* to 220* hot air is going?
I've tested this with my Wizaired, properly installed and sealed versus an open cone, swapping them out within an hour of each other. Not only did the scanner show a big IAT difference, but you could feel the difference. One thing I'm curious about is the claims of higher MAFF readings with an open cone. How much are those readings being skewed or not accurate because the flow isn't being directed as it should be. Won't go any farther into that thought, but those of you that read up on this stuff will know it sounds familiar.
Flow versus hot air is only an issue IF you can't get enough flow with a correctly designed CAI or FWI. The majority of our modders would not require more flow than afforded by a DIY FWI.
To the original poster, I think there are a couple of thread on here discussing which intake. My comment about not wanting to get in to the performance part was only because, it depends on so many things, and people will eventually either just pick an option that their wallet says performs well, or will try different options to see what works best for them...RECOMMENDED
I would love to run a cone off of the TB to free up the space, however, on my daily driver, with the mods I have, cold air is prefered by the engine over additional flow that I can't use anyway...