[Accord Man]

even after you're engine is "modded", its very unlikely that you'll need that much flow.

Consider this, lets say your piping is 2" wide (diameter), and to get a better flow you upgrade to 2.25".. Now lets say instead of getting a wider diameter piping you added a pipe, so 2 x 2.0.. Do you see the problem (difference in overall diameter), but there is a catch, the diameter of the single end of your Y pipe is a restriction.. But there is more to it, like where the Y is installed (considering the pressure is greater immediately after the exhaust manif compared to right before the exhaust)..