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Old 07-20-2009, 02:22 PM   #5 (permalink)
Master EcoModder
Join Date: May 2009
Location: New Jersey
Posts: 389

2003 Ninja EX250 - '03 Kawasaki Ninja EX250
90 day: 78.57 mpg (US)

Saturn - '99 Saturn SL1 Base
90 day: 47.27 mpg (US)
Thanks: 25
Thanked 58 Times in 37 Posts
From everything i have read, it seems that the optimal design is to have no airflow underneath the car. The flip side is that this is not really practical in a road car because there needs to be some sort of ground clearance for speed bumps, parking lot entrances (some are not level with road), etc. So the best answer i can give is that the least amount of airflow under the car is ideal.
Doing my part to reduce dependence on OIL
Doing my part to reduce congestion
And enjoying it!

If you have to use your brakes, you are driving too fast!

My 101.5 MPG 2003 Kawasaki Ninja 250

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