I just put a GSR swap into my EG hatch. I only have one CEL and that is for the Knock sensor. I can't hear a change in the tone of the intake at 4400 rpm when teh VTEC is supose to engage. Maybe because of the dual runner IM it can't be heard that much ? I was wondering if the VTEC wasn't kicking in or if ther was something preventing it from kicking would it throw a CEL ? Anything i can go to see if it's really engaging ? If i drove the car cold and got on it, than after it was warmed up would i notice a big difference with the engagement of the VTEC ?