i just recently but my b17 in my 92 vx hatch, and at certain times it lags real bad like my timing is messed up for a minute then it will get better and then worse, it goes off and on like that, i tried changing the knock sensor and it got a little better but still lags, a friend of mine had read an article about if the vtec oil pressure switch wasnt reading right than that could make the engine lag, but i have no clue...any ideas? and plus i havent checked for cel's yet, i know i probably have tons of them...i'll check them and get back but still, any advice or help?