BG ram air
its pretty hard to give out a real number on power, because it works that the faster you go the more power you gain. and the alternative is to make your own, or get lucky and find one for sale.
And good luck on finding one for sale - last used BGRA that was posted FS here asking price was $350 - setup only cost around $270 brand new to begin with - way to much for what it was IMO. Guy didn't have any problem selling it though 
I finally ended up going with the Volant CAI for T/A, debaffling my hood nostrils, and designed ducts in 3D Solidworks to duct the air directly from each nostril back to the rectangular opening under the hood. That way I now have true Ram Air as the air is ducted directly from the nostrils into the sealed Volant CA box. Ducts were made of welded aluminum sheet metal and painted flat black as to no be seen if looking into nostrils.
-Jay-
I finally ended up going with the Volant CAI for T/A, debaffling my hood nostrils, and designed ducts in 3D Solidworks to duct the air directly from each nostril back to the rectangular opening under the hood. That way I now have true Ram Air as the air is ducted directly from the nostrils into the sealed Volant CA box. Ducts were made of welded aluminum sheet metal and painted flat black as to no be seen if looking into nostrils.
-Jay-
