If there is codes stored in the ECU the timing to return to the normal values. I would check it with timing light and make sure its right. It is realy easy to adjust... Just loosen the CPS and rotate untill it is at 10 deg at idle with the diagnostic port shorted.
If your check engine light is off, or if you don't have any codes stored, then you will be back to normal. If you have codes, unplug one of the terminals on your battery for about 15 seconds. That will clear it. You probably already knew that.