As pjr said -
VTEC on 1.8 is similar to
VTEC-E in older 1.5 engines.
It is meant only to safe fuel, not as 'power mode'.
If applying full throttle, you will be in 'power' mode all way from 1000 - 7000rpm.
Although this 'power mode' should be called 'normal mode', and other mode is just 'saving fuel' mode.
Many people thing that if it's a
VTEC, it should open up at higher rpm's for more power, but in case of our 1.8 engine, this is false.