Quote:
Originally Posted by bbnks2
Spoilers do not generally add drag. They create a pocket of high pressure which allows air flowing over the roof to pass over the rear of the car more easily. This generally reduces drag and rear end lift. A wing uses that airflow to generate down-force which is where added drag can become significant.
Dragy is a decent app but you're talking about comparing different conditions, different dates, different mods, different roads, different slopes, etc. Way too many variables. Spoiler surely isn't one of them though LOL.
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Well it’s the same exact stretch of road and temp was within 2 degrees on those runs. Also no wind on those runs either both runs at 4:00am on a cool perfectly still night. Same driver too... The only variables are the changes to the car really.