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Well, I wonder how it would work in summer too. So far, the IA temps seem to hang close to ambient temps in these conditions and I doubt we'd see better than that. But if we could get even IA temps of 90-100 degrees on 85-95 degree days, that would be an improvement compared to some of the IA numbers I've seen posted, like 150 degrees! I suspect the key is going to end up being the combination of this insulation AND a snorkle that makes the most difference.
Here's some more testing results:
This was at night, ambient temps varied from 40-45 degrees.
After 15 minutes of city driving, the IA temp, started at and remained at 46 degrees. This was from a cold start up. Full WT warm up took a good 10 minutes.
I then parked it for 15 minutes. I was inside a covered area, so the ambient temp was slightly higher at 45. During that 15 minutes the IA went from 50-69 degrees. I then opened the hood, with no affect.
I then lightly sprayed water all over the intake filter and canister for about 15 seconds. The temp stopped climbing and very slowed came down to about 67 degrees after about 5 minutes.
I then closed the hood and took it out on the highway. Ambient temp was 42. Within 5 minutes on the highway, the IA was down to 46 where it stayed no matter how I drove or for how long, as long as I remained at highway speeds of 50-60 mph. As soon as I slowed down significantly or stopped, the IA started to climb very slowly.
So, far at highway speeds, this mod seems to keep IA temps to within a few degrees of Ambient temps, but slowing down or stopping really has a major affect on IA temps. I tend to this is almost entirely because its breathing in hot air from the engine area. I wish I had snorkel, because I suspect, temps could remain close to ambient even at low speeds with a snorkel and this insulation mod.
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