Recently, my car has been kind of studdering when engaging into vtec. I believe it's occuring at engagement point and sometimes at 7600 rpm. I'm not sure if it's cause i'm low in oil or something....This is a jdm h22a in an EG. I'm running a chipped p28 and its chipped for vtec at 5500 and no rev limiter.I need help to figure out why my motor is studdering. thanks