Your lambda sensor seems to working fine - so i wouldn't worry about this for now. A thing that may need a more attention are your intake pressure sensor (MAP)
You mentioned that you reved the engine at the last frame - how high did you rev the engine at that point !!!
If the engine reached full throttle you should have a higher reading and when the engine get to down to idle speed - the readings seems lower than expected.
You could try to test the MAP sensor with a vacuum pump and see how the engine react to this. As always you need the right specification for that specifically engine type to verify the reading from this sensor.
Hello, I believe my reply from yesterday is gone forever, so I will post it again.
The fix for the car was that someone has fitted an ignition distributor from a monopoint 1.6 engine to this car. After checking the numbers on the distributor I found it was the wrong one, so I picked up a good one for the car, after fitting this one the car runs good again. The window in the hall frame was a little bit different and this caused the trouble.
Thanks to everyone who has helped me.