Vehicle Details

Has issues with the VTEC and VTC systems. A shop diagnosed the issue to be due to oil pressure and recommended keeping the oil up, but full oil doesn't really help. What I found is that there is a weird range of oil where the car runs ok, but anything higher or lower than that magic range and it will run much rougher (stutter while idling, weak acceleration, occasional stalling). Talking to people who know cars more than me, it seems that it could be related to the timing chain, but I don't know...