Mine seemed a bit louder when I put the TIP on.
Forge's cold side relocation kit is ment to make it a bit louder.
 
i cant deside wat to do with regards a dv i fitted a pipercross and it made it louder but would an upgraded dv change that much?
 
I didn't find the TIP made any real noise difference but i didn't buy it for that anyway
As for the coldside relocation kit no change to volume really but a change to note as air goes via redirected route
 
i heard more boost noise with tip,as it allows more flow to the turbo due to being less restrictive and wider.

main point is to stop collapse when running higher than oem boost.

great little mod for the cash.