it happens right after i switch gears in about the 2k to 3k range.....once i start stepping on the gas i can hear almost like an air sqeauling sound(best way i can describe), and it stops at about 3k.....it doesnt sound like a belt thought but it could be

it also did it too when i had my stock air box on there but now it louder since i put my new ingen intake on

please halp me guys this sound is driving me mad

 

my car does the same thing along with almost everyone . seems pretty normal to me, but w.e. u can hear it a lot more once u put a intake on

 

My car does the same !

 

vaccume leak?

 

He says it stop at around 3k. Idk about u'lls, but thats when u start hearing mine and it gets louder higher u go in the rpms. That might not be what his problem is, it could be something else.