Whistling sound with Acceleration?

Everytime I accelerate it sounds like someone is blowing compressed air. I hear it in the cabin. Is this normal? Sound is pretty apparent between 20-40 seconds

https://www.youtube.com/watch?v=WuPjVoV7lMc&feature=youtu.be

 

It's your intake sucking in air. You need to chill w/ the noises. The truck is fine.

 

I really need to do that... haha nice build btw.

 

The 3rd gens can make a noise from holes in the lower control arms...

 

Noises in Park? I misspoke when I said accelerating. I'm obviously not doing any moving in this video haha

 

Turn up the stereo.

 

Oem air filter and air box?

 

Yessir, truck is bone stock. 2200 Miles. Air filter was clean there wasn't even dust in it.

 

Sounds normal to me...at startup the intake valve defaults to an intermediate position while the exhaust valve is advanced. During partial load (slight throttle) Atkinson operation both valves are retarded. As the engine transitions to higher load (you goosing the throttle) the intake valve timing is fully advanced while the exhaust stays retarded. In short the whoosh sound you hear is a result of the transition out of Atkinson cycle since the intake valve is held open slightly on the piston upstroke forcing air back into the intake manifold.

 

This
How many noise posts?
Relax, enjoy

 

Makes sense. Thanks for the input everyone.

 

that's the turbo. all good.

 

the blower.