The Test I did using the Temp Gun was as follows… All 3 runs were 10 min’s and I beat on the car purposely trying to get the Turbo/Manifold hot to see how much the MC would heat up. Runs where done 2hrs a part from each other as well to let the car/engine bay/MC completely cool down before the next run.
Temps from the Turbo of 700-800F where as the Manifold was around 500-550F
Without the Sheild installed the MC was reaching temps of 165-175F but with the Sheild installed the max temps I got were between 104-109F. So the Sheild is keeping the MC atleast 65-75F Cooler
Now here is the interesting part… I also did the test with a Sheild that was 3/4’’ higher (so it went over the Cap) and without the Knotched removed for the Strut bar. Temps at the MC were then between 120-125F which is actually hotter. And the reason its hotter is because the MC cannot breath at all, or more so, theirs no air moving over it at all which is actually trapping the heat in.
So I take it you have a Top Mount setup ? If you want Dustin, I can make your’s custom to your application so it fits/covers exactly the way you want it too…