After a couple of days driving with them on I’ll say I’ve felt the most difference in while driving in ECO . When driving in Sport mode I can’t say nothing has changed but maybe I’ll start to notice more of a change over time.
All in all cost wise for me it was worth it’s aesthetically pleasing. Might take some time to see how it holds up on for someone a tuned setup to be a worthy addition. I lucked out and got them with a discount when they were up for what was apparently preorder.
Fun fact you can pop out the windows on top of the main housings not certain why though.