When I disconnected my battery in order to reset the ECU, on reconnecting I took the car out and drove it like a boy racer for over an hour, I really gave it some serious stick!. (I had cleaned out the throttle assembly, but the car wouldn't start afterwards!) So took the battery off to reset the ECU
It worked wonders .. Originaly the car was very slow and unresponsive to drive, but now The car is extremely lively and a pleasure to go out in..