Zspeed Undertray and Brake Ducting

Originally Posted by OptionZero

Casually reading through some threads about brake cooling and noticed that an issue popped up was how to install brake ducts for bumpers other than the ones Stillen is pre-made for ('09-12 factory bumper + Stillen facia) or Nismo (RC or copy thereof from Synergy or Finite)

I have a 2015+ Nismo. There's no off-the-shelf solution for hooking up brake ducts without hacking up the bumper for some universal ducts.

For a race car, no problem:


Doesn't look half bad

But is there a solution without hacking?

Then I found this thread:
Nismo bumper brake duct install

Basically, this dude mounted some NACA ducts on his Zspeed undertray. Wicked solution

However, when i see the 2015+ nismo zspeed tray, it has this dip in the middle:



So i was thinking?

Why not cut a couple holes as pictures here:


Rivet on these:


Connect the hoses, and viola?

Could even put some mesh in between the opening and the flange to block rocks

conceptually . . . would that spot pick up enough air to be worthwhile?