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Old 01-03-2011, 07:13 PM   #489 (permalink)
Cd
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Join Date: Feb 2008
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Hello Mike. I was just looking over your album once again and noticing things I had not seen before.

( I like a lot of what i am seeing ) Details. details. Very sleek machine ! 'thumbs up'

One thing that has been bugging me for some time is that you say that the car got 95 MPG at 65MPH with the previous non lean burn engine.
Since a 20 % reduction in drag is roughly equal to a 10 % increase in fuel economy, how can this be ?
Stock, you car got 47 MPG* highway and you reduced its drag from .31 to .17.
If my math is right ( it's most likely wrong ) .17 is around 45 % of .31, so you reduced your drag by 45 % ?
Wouldn't that equal out to around 58.75 MPG ?

Where are the other 36 MPG coming from ? The AeroCivic.com site states that you get 95 MPG on a level road at 65 MPH. This makes it sound as if no engine off coasting and other tricks are used, so I'm confused.

* Old rating at 55 MPH and now rated at 41 MPG highway according to the new measuring system at fuelecomony.gov
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