so i bought my first 6.7 a couple weeks ago and immediatly had the dpf deleted witth mbrp 4" and a smarty, but i have a noise i cant figure out, idleing or full throttle or anywere in between my exhaust randomly changes tune, i thought it was the egr tv but i dissasembled it last night and its still there the only thing i can figure is its somewere in the turbo but i have no clue please please please help, it is annoying as hell

 

VGT changing?

 

sorry man youll have to spell that out for me

 

vgt like said above i bet just guessing varible geometry turbo or something like that somthing else you can go with out or leave what ever u want

 

did the service bulletin that they had on the turbos were they drilled a hole in the turbo and clean them work at all?

 

its suppose to just clean out the soot and junk