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Old 03-15-2011, 01:09 PM   #5 (permalink)
fjasper
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Join Date: Apr 2010
Location: Kalispell
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Sylvio 2 - '04 Audi allroad quattro Biturbo 6-spd
90 day: 25.09 mpg (US)

Atlas - '04 Audi allroad 2.7T 6MT
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If it allows airflow to reattach, and then produces a clean detatchment over the smaller area of the back of the car (rather than having the combined area of the back of the trunk and rear window under detatched flow), then it should help.

I guess this is why A-B-A is so important. Too many non-linear effects to accurately predict, even with some pretty serious computing power.

Fortunately, a flat coroplast spoiler would be easy to make and tape to the trunk for testing.
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Last edited by fjasper; 03-15-2011 at 01:24 PM.. Reason: 'Cause I didn't read the whole thread before I posted.
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