Airflow issue?

[Shorty S91]

Symptoms would suggest a faulty MAF sensor, with you saying the car feels bogged down and then surges back into life. Out of interest what air filter do you have? I would imagine the rest of the fault codes have come on as a knock on effect. If the MAF sensor is faulty then it cannot send reliable signals to the ECU about incoming air flow, which it needs to calculate the air fuel ratio alongside other things. The most likely scenario in your case is an intermittent fault with the MAF signals causing the ECU to interpret this as low airflow and thus shortening the injector duration to use less fuel. I believe that the 1.4t engine is the same as that of the corsa black editions. quickest way to diagnose it would be to unplug the maf sensor and see how the car idles. If idle smoothes out then you can put you money on the Maf being at fault. Let us know how you get on and either way get it booked in for a diagnostic scan afterwards incase there is still an underlying issue