Yea, under cruising conditions it make a constant flutter sound, I got used to it and it dont bother me. I sounds like a blow off valve on an air compressor when you let off the throttle after you get on it. It was a cheap cost affective and good looking way to fix my problem. I bought the pipe and valve off ebay and it cost me $15.00 to get the base tig welded to a peice of aluminum pipe.

Heres a pic..

 

if anything watch your fuel pressure at the front of the drivers rail for a bit to make sure everything is ok.

i feel like it will work fine, but i kinda agree that it is a compromise of performance for looks.

if you ran the rails in series there is much less a likelyhood of a pressure difference from once injector to the next.

i took fluids too in school, and all of that ideal stuff when the planets are alligned at STP you have to take with a grain of salt.