s2000 vtec problem help!

prelude99Vtec21

New Member
my dads 2000 s2000 lags when it goes into vtec. uh i dont really know how to explain it but i guess you can say it kind of bogs/almost bucks. instead of a smooth ride through vtec, the vtec basically feels like it turns on and off. what do you think could be the problem?:confused: thanks
 
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