I just bolted on the rt cat this week end and removed the rosonator. The intake is set up like the mugen now (stock piping down to the fender well, rosonator cut off and upper tube gone). After I did these mods the vtec switch over is all but gone. Almost no change in sound and vtec kick. Could it be that the mid range has improved this much to not notice that kick in power at 6k? I can understand that the sound would be some what diminished because the rosonator made it more pronounced but wow my vtec is gone. I know that the switch over goes away with the hondata reflash but I didn't expect it to go away with just an intake and cat mod. Any one else experience the same? So how does it feel? Just like a smooth increase in power as the revs climb. There is no kick at 6k but over all it seems be just as fast, and a bit stronger off the line and in the mid range. What's odd to me is I expected the top end to feel stronger if anything not the bottom end. Guess I was wrong. For those that have made the same changes please chime in. I should also mention I'm still running the stock exhaust and air filter.