Has anyone used these?

http://vipautosalon.com/store/index.php/lexus/is-f-2008-present-use20-1/think-design-isf-adjustable-under-floor-spoiler

iCode offers a set as well.

Not that expensive. They would look nice under the car and clam a reduction in wind noise. Not sure how often I would benefit from the down force increase but there will be times when every little bit helps.

 

Where do they get installed?

 

under the car, side of the skid plate area....


seems like a lot of $ for something I could almost make myself!

 

 

This should come with a turbonator for the intake to complete the package.