Quote:
Originally Posted by M_a_t_t
So you can't make the top of the car not produce lift but you can counteract it using other mods. For pure drag reduction you would want an overall neutral lift/downforce. It sounds like a neutral car body isn't very realistic (especially DIY) in terms of real world and the best result would still have some overall lift.
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No, it's actually quite easy. My Insight develops downforce from a very simple (but large) undertray and basic diffuser. If I wanted zero lift, I could easily reduce its size.
My Insight:
The important thing is to actually measure what you are doing. So, through measurement of lift/downforce, you can see what the impact is of the modifications you are performing.