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Old 05-03-2009, 08:40 AM   #7 (permalink)
lunarhighway
Master EcoModder
 
Join Date: Feb 2008
Location: belgium
Posts: 663

vectra a - '95 Opel Vectra GLS
90 day: 37.51 mpg (US)
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thanks ! those pics where just what i was looking for! i've just come back from to store with some aluminum sheets to make a new version of my undertray that covers everything up to the front firewall.

those air inlets seem like a good idea to replicate!

i wonder what your cars Cd is, the standard astra G is said to have a respecable 0.29Cd so these pannels should nock quite a bit of it!

And if you considder that the opel calibra 8valve verions had a 0.26 Cd with the aid of underbody pannels and a top grillblock, but the 16v versions where only 0.29 without these features
(the same as my vectra A/cavalier mk3 on wich the calibra was based and wich also infuenced the astra G)
than perhaps it's not to crazy to think that these cars with some underbody treatment and a grillblock might have a Cd that approaches that of the calibra!
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