letters making pictures instead of words? Basically, unless you are starting to push >500 HP (give or take), the recirc valves are more efficient than the BOVs. I have the Apex-i BOVs, and I do love the sound, but I backfire A LOT because of the extra rich mixture (BOVs + running JWT ECU, which tends towards the rich side for safety). Hopefully I won't be quite so bad in the next couple weeks once I have upgraded to Stage IX+ and get my car tuned on a dyno.