Difficult to see, but I did the Short snorkel mod, cleaned the edges nice and smooth and ran a (old) intake K&N air pipe from the bottom of the bumper to the snorkel.
Kinda like the Zeek snorkel but more ghetto style.
If you don't know where to look you don't see it really.
Don't notice any real changes, a little bit more growl but nothing worth noticing.
I don't track my car so I just did it because I can