I have a K&N drop in and reworked part of my intake so a pipe goes right in back of the grille, adds power especially when the temperature hits in the low 60s and 50 degrees mark, and on the highway when you hit the throttle.
The dealership never says anything to me about it.

If you want to gain back some original power, clean your Throttle Body every few thousand miles or with oil changes.


99' Black S70