Remove rear grill louvers for better cooling?

Be careful that they do not protect bumper from melting from heat from mufflers or wires etc .. every part has be designed with something in mind

 

That piece is designed to be there, either to protect something like @flash32 said, to direct air to or away from something, or for some other reason. They are a very specific shape in a specific area. I would leave them.

 

Interesting fact: the 430 Scuderia did not come with those deflectors, but F430s with the rear challenge grill still had them installed.

 

I took mine off maybe 3 years ago. It's better for the heat to escape thru the rear carbon grill. I also added these 16m grills for the engine lid along with naca ducts in the undertray to scoop up air as i go down the road. Ive now have maximum air flow in and out of the engine bay

 

Note that my post above is not my car

 

Would you mind measuring the rhomboid shaped opening of the grille for me?

 

I took mine off a year ago on my f430 with the challenge grill. Does appear to be for reflection prevention. When I drive over white road arrows/markings I get a pretty good reflection off the back glass. Startled me at first, but now is expected. I haven’t noticed any issues as of yet and would assume that the heat now has an easier time exiting the back of the car.

 

I removed mine for better cooling.
I wrapped the latch cable and wire in some heat insulation.
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I wonder why the Scud doesn't have the reflection problem. Kdedrick said the Scud doesn't have them.

 

Maybe the plexiglass is less reflective? I’m not sure…