Other makes of car have code relating to rich trim coming up after isolating EGR valve. I can see the reason as engine now has more oxygen going through it and more charge air is being asked for.

 

I will keep an eye on Consumption and report back, so far I have covered about 700 miles and all seems ok with fuel lasting longer, and the engine getting stronger, but I didn't take proper fuel readings, so will do a better calculation on next fill to fill

 

Yes report back any results John.