Weird boost related noise

[LovinPSDs]

Guys,

I get a weird high pitched noise, kinda sounds/seems like a boost leak.

I only hear it when I come off a high boost roll and ease out of the throttle, it's not loud but it's there..

Sounds like it's coming from behind the driver side dash, like high and to the left when sitting in the drivers seat. Any ideas? Up-pipes maybe?

 

[White_monster]

Exhaust manifold bolts may be loose.

 

[webb06]

^ that or up pipe bellow starting to leak

 

[tbsimmons]

^ that or up pipe bellow starting to leak

Doesnt say if you deleted the EGR coolers or not. If you did I would put money on the bellow for the EGR pipe.

 

[powerstrokinfirefighter]

^ that or up pipe bellow starting to leak

This ^ I started hearing the same noise on mine. Check the firewall and see if there is any soot near the turbos