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Old 03-17-2008, 02:31 PM   #9 (permalink)
EcoModding Apprentice
Join Date: Jan 2008
Location: SF Bay Area
Posts: 150

Silver Bullet - '02 VW Golf TDi
Thanks: 5
Thanked 16 Times in 11 Posts
I'm with aerohead on this one. That rear diffuser looks even more aggressive than the ~9 degrees we use for maximum downforce on our 150 mph sports racers. OTOH, at low enough speeds, maybe the airflow remains attached even at that steep angle.

At the front end, those running lights do nothing but add drag, and even the modified grill opening is still too big IMO. On our race cars, we provide just 1 square inch of opening for every 4 hp (with full ducting to the cooler).
Best tank ever: 72.1 mpg in February 2005, Seattle to S.F.
New personnal best 'all-city' tank June '08 ... 61.9 mpg!
Thanks to 'pulse-n-glide' technique.
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