Out of curiosity, did you notice a loss of low end torque? I know that the only REAL way to know this is with dyno before AND after the mod... basically, motors depend on some back pressure for low end torque... but don't like back pressure for high end horsepower. Once my conversion is done though, I will treat my beast to a complete dual exhaust system... not sure about the H- or X-pipe though... its gonna depend on how much time we have in the exhaust shop as I have a friend who is planning on opening the shop up for me one evening... if things go smoothly it'll get an H-pipe...

Later!