Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - An unanticipated side effect of Cd reduction

MetroMPG · 04-03-2009, 10:26 PM

Interesting - I would have predicted you'd have slightly higher pressure and better flow through your windshield-base vents after lowering the stagnation point with your new front bumper (more airflow going up & over the hood.)

The hood/windshield angle hasn't changed has it? Could it be related to the windshield wiper deflector? Do they cover the vent inlets at all?

04-03-2009, 10:26 PM	#12 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,532 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 54.46 mpg (US) Even Fancier Metro - '14 Mitsubishi Mirage top spec 90 day: 70.75 mpg (US) Appliance car Mirage - '14 Mitsubishi Mirage ES (base) 90 day: 62.14 mpg (US) Thanks: 4,082 Thanked 6,978 Times in 3,613 Posts	Interesting - I would have predicted you'd have slightly higher pressure and better flow through your windshield-base vents after lowering the stagnation point with your new front bumper (more airflow going up & over the hood.) The hood/windshield angle hasn't changed has it? Could it be related to the windshield wiper deflector? Do they cover the vent inlets at all? __________________ Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata Honda mods: Ecomodding my $800 Honda Fit 5-speed beater Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage. Ecodriving test: Manual vs. automatic transmission MPG showdown EcoModder has launched a forum for the efficient new Mitsubishi Mirage www.MetroMPG.com - fuel efficiency info for Geo Metro owners www.ForkenSwift.com - electric car conversion on a beer budget