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I have skirts on my Echo and Scangauge instrumentation. I made before and after, two-way tests on a windless day. It looks to me from the scangauge data that the improvement was about 1.4%, near as I could tell. Might be worth more on a Metro, as someone above mentioned. I wouldn't be able to see that small change on a tank-to-tank basis.
Last edited by jime57; 02-25-2009 at 08:10 PM..
Reason: expansion
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