Pearl White, the 5hp loss you are refering to was the "crosstalk" line. It's a 5/16 line that runs from the inlet plenum to the lower IC to lower manifold adapter I refered to earlier. The reason for that persons loss was that he was running all stock parts. small MAF, stock TB and such. On some of the higher hp cars with inlet mods they actually gain HP. The purpose of this tube is to recirculate some of the air back into the SC, so that is doesn't cavaitate, meaning starve for air. If this happens the rotors will beat the crap out of the bearings in the SC. So if you are running stock inlet parts leave it alone, but if you have many inlet mods you should probably give it a try.
The hose he is refering to that he plugged is the one from the bypass itself. (at least the way he's describing it sounds like that's the one)
Jeff