neat! they kind of look like something i've made, only yours look more effective. very smooth. but indeed take them off before you paint them, or take the time to mask things! perhaps you can mask the bottom of the bumper and repaint the lower plastic part along with the deflectors, that way they'll blend completely with the look of the entire car. but a very nice job!

:D Yes, you have reason, but I had much haste to finish in order to see the result.

I do not have way to estimate the eventual improvements, moreover, during the use of the car, have noticed an increase of the aerodynamic noisiness. I know, that this, is not a good indication, you believe that I have gotten worse the situation or not? After to have felt the turbulence, I have thought, that he derived from the flexibility of some elements, therefore, I have supplied to block they with of the expanded foam, and must say, that the situation seems to be improved. You have of the indications to supply to me with regard to, even of the personal experiences?

I have not used expanded foam, but it seems like a good product to use to reduce noise.

after the use of expanded foam the noise it is reduced, but non eliminated.

I task, than features of aerodynamic noise.
can be gotten worse the situation with added front deviator?