JDN, and even more weird ..why will Dinan take air from the other side of the car going over the radiator which is HOT and loosing velocity//
need to do my own check under the box to see if there is enough room there to tap into the brake air duct ..maybe this weekend

 

Checked with the installer and the air does not come from the brake duct but behind the front bumper. I do not remember what the old set up looked like inside the grill, but this one appears to come down in front of the radiator and go through the bottom to get behind the bumper. He explained that Dinan did not want any turbulence coming into the air box that would interfere with the flow. So, this is pretty cool air being sucked up and passed in the conduit in front of the radiator before it goes over. Dinan has this to day about passing it across the top of the radiator: "Air from the secondary inlet passes through custom molded ducting, including a visible section manufactured from carbon fiber, also designed to reject underhood heat and provide maximum flow." There is a definite difference in the look and feel of the carbon fiber duct.

There is a pretty good difference in filter size. Compare the Dinan filter size to the original charcoal filter I had removed from the first air box.

 

So that Dinan pipe replaces the stock entry? Interesting thinking or more like the put a huge airbox and they dont have anymore room to do anything else there.. i think i will add something like a visor in the entrance of the duct behind the front grill for it to collect a bit more air instead os drilling a hole into the box ... your airbox look so simple to make (for Dinan of course) why in gods heaven its taking that long to create one for the 550?

 

I think the size of the air box may be to accommodate a larger filter with less restriction per square inch.

 

I think the size of the air box may be to accommodate a larger filter with less restriction per square inch.