[Arminius]

It's been in the mid 80's quite bit, so I've been cranking the fan in my car, with the AC off. I decided to put all that air to work and vent it out the back of my Civic LX trunk's low pressure area.

I took out the lights from above the license plate and mounted them an inch higher. That way the light still shines out, but there are two large openings. When the fan is cranked up, the air pours out of the holes. It's pretty impressive. I don't expect the have huge FE improvements, but I know it will help. I'm also aware of the danger of exhaust coming into the cabin if I don't have positive interior pressure.

I'll run some tests late tonight if I can get a nap in. Again, I suspect the difference will be hard to measure.