I worked on improving the HAI today. I have no testing yet. I'll get some running temp results later today. Here are the pics. The material is aluminum vinyl siding coil. Its coated with a mylar armor coat on the finished side. Hope it doesn't go up in flames.
I had 3 months running the old setup and hope this improves my winter mileage. I seriously doubt I could run this in temps above 70 but will see.