[FastPlastic]

So the weather isn't cooperating when it comes to trying to put insulation on the underside of the hood. First we got freezing rain putting a good 1/4" layer of ice on. Now the temps dropped down to about -4. I did manage to get another run of test data very similar in starting temp and duration to one of the ones from before the weather stripping though.

Before
Starting temp:161F
Ending temp:79F
Ambient temp: 14F
Duration: 1hr 30min
Change:82
Winds: Calm

After
Starting Temp: 181F
Ending Temp: 94F
Ambient Temp: -4F
Duration: 1hr 30min
Change: 87F
Winds: 20-30mph

Considering the run after was 21F lower then the initial run and we had winds of 20-30mph. I would have to say it was well worth the $3 investment and will pay itself off in no time(assuming it hasn't already). By the way I still managed to pull almost 15MPG out of it at -4F. EPA is 14mpg in case you were wondering.