Havent seen anyone talk about this, i'm not too crazy for the vacuum suck sound of a CAI, but if i can squeeze a couple more MPG by installing one i might consider it. Has anyone noticed a difference?

I have a weapon r intake in my echo and i noticed that the mpg actually went up before i added headers and ehxaust.

http://www.scionlife.com/forums/viewtopic.php?t=5527&highlight=air

FYI - AEM intake provides nearly stock sound (I can't tell a diff).

I noticed no measurable change.

I noticed no measurable change.
me either :(