I drive an 06 2500 mega cab cummins it has 41k miles on it I have the tst on it at power 3 and torque 1, along with a straight pipe and the silencer ring is removed.

When I drive the truck it runs normally and sounds normal until I get the about 20+ boost and i start to hear a weird sound after the turbo whistles and it kinda sounds kinda like a supercharger but not as high pitched. Sorry that i really can't describe the sound since i havnt heard anything quite like it. The truck runs fine so im not sure if its anything i should be worried about. This is my first diesel and i've been trien to learn as much as i can from reading forums and magazines so any help would be appreciated.

 

Sound almost like a vacuum cleaner?

 

Now that u mention that it kinda does.

 

Should hear mine when I hit 35 and above!!!

 

Is it normal for it to be making that sound because it just started to do it recently.

 

Pressure side of the turbo probably has a leak.

 

Would that be an easy fix if i did it myself or would i have to take it to a shop