Thank you all for your help and advice.
I have adjusted the MAF using a CO2 Analyser and will be going for the re test next week.
I will let you all know how I get on
The worst that can happen is that i will have to fit the cats and oxygen sensors or maybe only the oxygen sensors.
Lets see what happens
Many thanks to you all.
Anyone needing a solution for electric seat movement when the Seat ECU is missing or broken I can help