How about Spiralmax?
 

First off, Hello all! I am new to this board, but have been reading it for awhile. It's nice to finally contribute where I can!!
I got a relatively stock '03 GT, just got a MAC CAI.
Question for you all:
Anyone used a spiralmax? Seems like snakeoil to me, but I've heard people (usually at truck stops, you know the ones) swear by it. Has anyone experienced it's results?

It's not Scottish, it's crrrapp!

I was a little nervous putting this question on this site, as they seem to be a sponsor. I like their web site, where thay claim HP gains of 0%-25%. I guess the real number is a bit closer to 0 than 25%.

You got it! a big "0" at that.

Yes, while it's a good idea to have a swirling motion in the combustion chamber, it doesn't quite work the same in the intake tract.