To answer your first question--no--your V-tec would just not work at all. Your redline would not be affected in any way shape or form unless your running S300 and you start messing with your colaberations. In that case, tunig your V-tec, 2-Step, and/or anti-lag incorectlly can cause it to hit redline early.
On another note, I'm going to have to stick with my first idea and still say ECU
Modified by mavvrik at 8:35 PM 7/30/2008