I personally love the sound. I did some IAT logging yesterday.
Ambient temperature during my logging was 78 degrees.
IAT temps at certain MPH:
0 mph (stop light at operating temp) - 91 degrees.
35mph - 86 degrees.
45mph - 82 degrees.
55mph - 79 degrees.
65mph - 79 degrees.
80mph - 76 degrees. (lower than ambient air)
I'm using an Edge Insight CTS to log my parameters.
http://www.edgeproducts.com/product.php?pk=145&pvk=405