Ya know, everyone goes on and on about heat soak. I live in a year-round hot climate, and yeah, if I really stand on it, the temps climb to 215 or so on the temp gauge. But they drop down fast and I've never, ever noticed any significant decrease in performance. Personally, I think the FMIC for the NB is a mistake. Sure, it looks kinda rad, but I know for a fact, that around town, the temps rise cuz it's blocking the radiator.
A sidemount or Audi TT double SMIC is the the best option IMO, but u only REALLY need it if ur track or drag racing, not for occasional 'spirited' street driving.