Yep. Just a simple extended stop light in the summer will heat soak the TMIC. I've seen my BATs (Boosted Air Temp) jump 20-25 degrees just sitting.
As far as power goes, you won't make too much more but you'll see some gains. I have the ETS TMIC and have had it for a couple years now. It's a nice upgrade but will not cure you from having heatsoak. It will, however, reduce the time it takes for the heatsoak to dissipate while moving.
If you want some hardcore information and a serious read about FMIC vs TMIC heatsoak, I suggest you read the 10 page report from CP-E when they designed their FMIC for the MS6. It's a very well written document and full of sciency stuff.
Sub, do you know where that article is on their website? Thanks for feedback. I tried looking through their site but it's a little discombobulated.