i just recently finished getting the exhaust finished on my truck, it has been just a glass pack clamped on my down pipe and now its a cherrybomb extreme with a turndown directly infront of the axle needless to say its alot quiter in the cab scince then I have noticed a squeeling sound almost like a boost leak mixed with a belt squeeling, My neighbor and myself have looked around breifly and the sound seems to be coming from the passenger side toward the firewall and seems like maybe even the wastegate is doing it.
when I go WOT its really bad but when i ease into its not so bad even at full boost, I have already checked my clamps and piping, anyone have any ideas?

On a side not I just installed a mightymouse catch can and I could not be more impressed with the quality.

 

I am just getting mine going again. Seems like the more power you add the more problems huh who would have thought. Mine also seemed to make a noise similar to this. But since mine is in my old truck I thought it might be something else almost sounded like something was rubbing.
Anybody have any thoughts for the OP

 

Is your wastegate vented? or back into the exhaust? I would guess exhaust since its Kyles kit, unless its been modified.

If it is vented, I would guess thats it depending on how the "squeal" sounds. Put a muffler on it.

 

yea its back in the exhaust, and i just put a muffler on it thats when i started to notice it, it might just be the wastegate, its just an interesting sound

 

Mine is vented. I do have it routed to the rear of the truck. I have not driven mine much yet it was just a new noise.