I have heard nothing but good things about the breenspeed tunes, all of the CAI comparison's I have seen are pretty much the same from a performance view.

You will feel a difference with the C&L + tune.


Personally I went with the JLT & bamachips tunes, very pleased, gained about 40 rwhp, 6 tenths off 1/4 mile times, and added about 2 mpg.

 

I bought the BBK before I purchased a tune. Was a mistake. I ended up buying an SCT from Brenspeed. The tune makes the world of difference. If I knew that before, I would of purchased a CAI that required a tune to begin with. Its not really worth it to switch out now, but that BBK CAI does look pretty beefy under the hood.