Hi, all I check out their web site, but what I found was something like a K&N air filter with heat sheild and that's about it. ( correct me if I am wrong )
The list of information was limited, so I can really take a good look at their product.

Also What is the charger thing ? I suppose is just a pipe with a turben right ? Anyone had experience ? Is that any effective ? ( kinda of interested.

I talk to a guy from renntech along time ago they said the best thing is to keep the factory air box with factory replacement air filter from K&N that way we won't be sucking in hot air produces by the engine ??

I had tried with those cone intakes on my M104 engine. I can't tell much of the difffences. The sound was good, but I would recommand the factory air box in a hot summer day.
Pete regards