Mine is the 2 piece unit. The only issue I have had is the connection point to the side of the engine becoming threaded due to engine movement, but that has been solved by a mount underneath fitted to the support beside the battery.
As for the noise, the Dbilas is ideal if you want a good increase without shouting about it. It does make some more noise than the standard intake, but its not at all loud. In addition, the K&N panel filter is easily cleaned/replaced unlike its competitors.
Cracking piece of kit, but I fancy more noise hence why I am considering an ITG.