I like the sound he is after. But, it is only fun for a while. It does get old after a while (just like anything else).

I am by no means an expert on any of this, BUT.... It looks like that piece is in there to smooth the air flow through the flex pipe. It seems that removing it would increase turbulence and reduce power. Perhaps the increase in noise is due to the increase in turbulence?

I had a 2002 Dodge Dually with the Cummins Diesel and a 6 speed years ago. I bought it new to pull a large 5th wheel camper around. On that truck there was actually a "silencer ring" on the intake side of the turbo that could be removed. Removing this ring increased the turbulence on the intake side of the turbo and dramatically increased the turbo whine. I removed it for about a month. I got sick of the noise so I put it back.

To each, his own...

__________________
AJ

1985 300D (SOLD)