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ok, it was the computer and not the autotap. Another notebook setup and I'm back in biz.
updated data: 91 degrees outside... hotter part of the day. I let the truck warm up to full temp. Intake reached 153 degrees which was a spread of 62 degrees. I took off and tried to maintain 30mph. I hit 40 a couple of times, but kept it mostly between 30-35... The best I got was into a fairly strong headwind (obviously netting over 35mph) was 111 degrees. That is 20 degrees over ambient.
Stopping just at a stop sign jumps the intake temp up 10 degrees in that short a period of time... At a stoplight, I hit 132 degrees after sitting there for no more than 20 seconds or so. It climbs QUICK as soon as I slow down. The temp moves downward less quickly once moving.
Tonight I'll test on the way home and see how long it takes to get to ambient at freeway speeds.
The net of all this is that I am more and more convinced that a sealed enclosure that pulls air from OUTSIDE is going to net more horsepower -- period.
I'll try again tomorrow with the duct closed up and see if the cooling is due to the ram air or due to air coming in from the front of the vehicle...
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