Ok me and sum buddies went cruzin last night, and i had some friends in the car with me, and we noticed that when it went to crossover into vtec it acted like it hit then went offf then came back on ect... it didnt seem smooth hard pulling like normal, it seemed like it was gettin all its power from the turbo, and vtec wasnt kicking in. I checked the connections, and they look good, i didnt have a CEL at the time but i keep throwing one for an o2 sensor, can this make not engage?? everything is new on the bottom end and oil pressure isnt an issue, anybody got any suggestions?? or something to try?