...so long as you don't ride in dirty air.
In my car, I had a K & N aftermarket intake. I had my oil tested after 20,000 miles (yeah, it's AMSOIL) and it was fine except for a high silicon level. Ouch. I reinstalled the stock intake system (with $$$ Honda air filter) and after another 20,000 miles the silicon level was much lower, within normal levels. No difference in detectable power, of course.
I don't drive the car on gravel.