honda dealer told me to get an oil change, cuz i was due for one (im bad at getting oil changes on time), still had a CEL afterwards, then they told me to get a oil flush, but i said, oil change should be same (flush contaminents, get oil level up). THEN they told me to clean the vtec solenoid shield cuz it gets gunked up, and they cleaned the vtec shield. so the answer is yes, we took it out and got the filter cleaned (hope thats the same thing) and car still feels gutless and runs like shi*, takes forever to accelerate. btw, i had a BAD EVAP canister cel b4, fixed it, and bad catalytic converter for 5 yrs, fixed that this yr also. hope that didnt cause the vtec problem.