Quote:
Originally Posted by mav1178
The clarification on this is whether the underbody panels form an entire flat piece that deliberately directs airflow to the rear diffuser.
This means: Unless you have a custom underbody flat tray, everything else is "free" since it has no effect on aerodynamics that would constitute an advantage.
-aelx
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I guess it depends on if you believe air would get caught in the bumper. In this case it would then divert it to the oem brz "diffuser" - if that is considered one under the rules.