whistling noise?

[rollincoal04]

so i took my egr valve out yesterday to clean in and when i put my banks high ram intake elbow back on one of the studs striped into the manifold. drove it home fine with no noise and the next morning had a loud whistle under the hood when ever the truck was building more then 6lbs of boost. would this elbow make noise like a tea-kettle if it was sucking air? this is deffinatly not turbo noise? any help would be great. its a 2004 6.0 by the way

[dannyboy950]

Yup also any of the air charge hoses that are cracked/split or the clamps are not tight enuff can all cause a whistle/whoosheing noise,if they are on the intake side of turbo.
If the passenger side hose comes off it will cause the engine to run verry poorly and sometimes even dieand not restart.