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mar5ka · 08-25-2008, 10:40 PM

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)

08-25-2008, 10:40 PM	#1 (permalink)
mar5ka EcoModding Lurker Join Date: Apr 2008 Location: central PA Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts	Grill block affected milleage 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)