Installed a G-plus intercooler and the down pipe from the turbo to the intercooler, now I no longer have that muffler, I am now getting a turbo gurgle I didn't have before, when I'm driving down the freeway and let off of the accelerator it sounds like a Semi engine braking, but a lot lot quieter, doesn't happen every time but enough to catch my attention, I'm assuming that this is a normal occurrence when you do this upgrade, is this a normal sound

 

with the silencer removed in the piping, you are going ot hear the turbo more.

 

Thanks, what threw me was is the gurgle sounds like it's coming from the engine bay and not the usual sounds that come out of the exhaust