i have a 2008 dodge 3500 with the 6.7 egr cooler and valve delete along with a dpf delete and hs xrt pro set to 120 horse tune and when i start it up it makes a churping sound but after a few seconds it stops i havent had any problems out of it but it worries me it may be something that need attetion any ideas would be greatly appreciated thanks

 

Like belts chirping?

 

I don't thinks its the belt it sounds like it's coming out of the tail pipe

 

maybe the exhaus isnt tight on the turbo, sometimes you'll think you have the band clamp on all the way, and when it warms up a bit it expands and doesnt make the sound anymore? just an idea to check the clamps

 

Ok that's easy enough to check and would be an easy fix