I've done searches, and they are about even. I was wondering what I should do. I've recently sold my K&N cone intake, and I miss it so much, I didnt know that so little extra would make so much of a difference. I have just about enough saved for either an Injen cold air, or a nice axle-back. Is the axle-backs really worth around $200+? I was leaning for the Mazdaspeed muffler or the Injen. I am really not looking for much, just wanna have the most fun for the little $ I have.