Well I installed mine from doctor speed.com, everything went pretty well. Reset my battery. However when i mat the pedal once my engine gets to about 3500 rpm there is a slight whistle, fairly high pitched, and not that loud, but noticeable. All my hose clamps are tight and im not sure what else it could be. Unless this is common. thoughts?

it always does that. any CAI will

yup, i dont think its just with cai i think wai has it a lil, when its dead and i mean dead quiet i can hear a lil whistle coming from mine........but yes normal

So what your saying is I shouldn't get GM to try find that noise for me while its under warranty? I thought it was some kind of squeal, but its definately throttle position dependant. I didn't have it at first, but maybe now that my filter is a bit dirtier.

I don't wanna pay all the money for diagnosis when its gonna be something caused by aftermarket parts...

ya, totally normal... took a damn long while to get used to, but I don't notice mine anymore.

im sure if they opened your hood they would frown at your CAI.

i am pretty sure that's your throttle plate whistling when it's at the right angle

nice, thanks for you help.