Have you had someone in the driver seat press the gas and you listen to the engine? To pin point where the noise is coming from, once you know where,then you go from there.

 

Maybe a dirty throttle plate?

 

It has to be vacum lines,or anything to do with the induction of air. No other part,bearing,belt would make the type of noise you are describing at and only at a particular rpm.

 

so it did it befor?
does it affect ur performance? and is it messing up ur engine in any way??

 

Madsteez: I wouldn't rule out anything from a description. Who's to say that it isn't a wheel bearing and he's not hearing it from the right place? I think that you are most likely right, but it does not HAVE to be a leak.

 

Hm thanks guys, I'll keep looking and try to diagnose

 

chk the pcv valve

 

If you can make it happen by pushing the engine, keep doing that whilelistening forthe location of the noise. Pinpointing the location of the sound is 90% of the job.

 

yeah it was happening BEFORE i put in the SRI. it hasn't affected my performance at all. and as far as i know it hasn't messed up the engine. it's just a loud annoying noise. haha

 

it's really hard to pinpiont the noise becuase it only happens when i'm on the road. i've tried to just rev the engine and listen for it but it doesn't happen then. only at a certain rpm while im driving.