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Old 01-18-2009, 06:30 PM   #21 (permalink)
basslover911
Master EcoModder
 
Join Date: Sep 2008
Location: Fort Worth, Texas
Posts: 356

Silver Turtle - '02 Ford Focus Zx3
90 day: 38.83 mpg (US)
Thanks: 4
Thanked 2 Times in 2 Posts
Quote:
Originally Posted by aerohead View Post
basslover,there is a section in Hucho's book which covers research conducted on bellypans and diffusers.The rear mods do not perform up to their maximum potential if everything leading up to it is not paneled.So the addition of the middle panel should improve what you have.-------------Also,Hucho reports that undercar flow will stall and separate if the diffuser rises at an angle steeper than 2-1/2 degrees,so your sheetmetal may be a little "fast."
VERY true. Thats why I still have to do the middle. However, the car feels MUCH more stable now. MUCH.

Also, it has definitley raised my mpg (as it is) by 1.5-2mpg. This was the highest trip since winter came howling in.

SO, I completley call this a success!

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