[nonovurbizniz]

ya they definately make a difference... at the very least there is a 3% increase in power for every 3 degrees celcius drop in temperature.

switching between my short ram and cold air extension is night and day... and it's not just the noise. (however they are RETARDED loud)

I have raced a buddy of mine several times with it on and off.. with it on he beats me (by a good deal)... when it's off you wouldn't be able to tell I'm racing him. I usually just stop trying to keep up when (it never is anymore) it's on*whoops I mean off/*.