Quote Originally Posted by 2ds View Post
from memory the ECU checks for the following things before vtec will engage:

Engine temp
Oil pressure
Wheel speed above 35km/h
about the wheel speed.. if im in N, and pump the gas, i still get that vtec'y sound after 4.8k on my h22z, felt like the wheels were loosing grip too :P is that rite, or is it something else