So im kind of new at this stuff. I looking at a lot of posts about tuner and cai and basically i came across one that says that having a cold air intake without a tune can make your car too lean? I have a K&N Fipk CAI and an axleback exhaust from AM. Im sorry that it might be a really dumb to most of you guys but can somebody explain if im running too lean? Also, how can i tell? is there a difference in the way my car runs? gas milage maybe? Ive had this set up for months now without a tune. Did i possibly damaged my car without even knowing it? Thank you so much. and again I really have no idea what this stuff means