[thstone]

Drive it for about 100 miles in both street traffic and on the highway. Through this process, stop and turn the car off a few times and re-start it. Drive both slowly and give it the go. This process will allow the ECU to re-learn the compensation factors which should smooth things out OR the ECU might recognize a problem and turn on the check engine light so you can read the code. Either way, this is the place to start. Post up what (if anything) happens afterward.