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Old 08-27-2008, 04:03 PM   #20 (permalink)
aerohead
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mileage down

Quote:
Originally Posted by mar5ka View Post
Trying to figure out what happened, my mileage was worse with my grill blocked anyone have any idea's, this car rolls almost forever so its not mech. All highway(80) 400 miles rolling hills hardly any wind... my only idea is more air is pushed around the side of the car producing a biger wake---Also I found if I remove my passanger mirror there is a lot more wind noise

1986 Saab 900 with SPG aero package lowers CD down to .38 from .42

Running a grill block, a large flat skid plate (for rocks and smooth air) and a large whale tail( it changes rear angle from 25 degrees to 16 degrees)
By itself,the grille block would not be able to effect mpg by more than 3%.If your mileage is off by a larger margin,we need to look elsewhere for the culprit.
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