Well, I bought a Cervinnis chin spoiler for my 07 V-6 model. Very large spoiler. If it does nothing, it redirects a lot of air up through the lower grill openings. The ram air velocity stack for my CAI is in the lower grill under the driver's side signals. So it likely sees a nice boost in air as well. I've put about 100 miles on it since I got it installed, haven't managed to hit it on anything yet. LMAO!
I didn't install it per the instructions. They used the four push pins underneath and nine self-tapping screws. I don't really care for self-tapping screws if I can do better. Bought a 90 degree angle motor at Harbor Freight, drilled a bunch of 1/4 holes between the spoiler and the bumper, installed 1/4 bolts with lock nuts and one inch fender washers on both sides. Also increased the size and length of the 3M supervisor tape they supplied, from 1/4 to 1/2. And went full length with the two-faced tape instead of just under the signals.
The bumper moves a little with this on there, just a teeny tiny bit. But I don't like it. LMAO!! So I am going to fashion some aluminum supports that go from the four bolts that replace the push pins to the radiator supports. Won't be visible, will firm up the bumper so it doesn't wiggle at all.