there is if you you go with the larger MB filter housing. I have no dyno results to back this.

This does not apply to NW CAI. A NW comes with it's own low turbulance MAF elbow.

I currently am fabing my own custom CAI from a plumbing kit found on Ebay:

CXRacing 3" Alum Turbo Supercharger PIPING Pipe KIT - eBay (item 120342892645 end time Oct-16-11 20:02:49 PDT)