I basically have the RFL, but its the H34 series valve. Its an RFL, but instead of the "horn" shape on the output, its just a round fitting, for connecting a hose to, just like a stock 4g63 setup- the bypass valve. So what i did when i got it, was run it open like most of us do. It was loud, pretty cool for a while, then i got sick of it...So i then took a hose and ran that from the valve output to the turbo intake pipe. I basically re routed the bov output right back to the intake. This helps keep the turbo spooled during shifts, and it quiets it down. Its not super loud, yet not too quiet, its just perfect for my tastes..

13.5 @108 MPH-2.2 60ft(stupid FWD!)
S16G @ 18 PSI/FMIC/Running on MegaSquirt II (Now with sequential
fuel injection)
My webpage: http://eclipsed4evr.home.comcast.net
-1998 Mitsubishi Eclipse RS-T- "Toy"
-1992 Plymouth Laser Turbo AWD(SOLD)
-2000 Honda CR-V(daily)