I did this on my Supra, didn't actually bypass but had those passages welded shut on the intake and return pipe. Biggest benifit was that now I had less hoses to break and taking things apart was _much_ easier. It took forever just to get those hoses off the TB, and then you have coolant everywere. Now I can tear down in about 10 minutes to the cams with no mess! With no performance benifits, unless you get similar time saving benifits I would leave it alone.
-Mike
07 SSIP
http://www.CygnusX1.net/Civic