after a few more checks today i can say that the plot thickens...
It appears that if i leave the car after it has warmed up and go and fire it up again, esp. with MAT being above 40 or 50C. as soon as it fires up it is very lean. IE lamda = 1.15.
SO i can fix this by getting my MAT/TPS table adjusted.
Fine, so i drive off, go around for a short drive, MATs drop down to 35C, the MAT/TPS table is also nicely set there as well..
Then gradually, i start noticing when finding traffic lights that now my idle fueling is overly rich!!! EGO correction having to take away fuel, down to 90 or 86 EGO correction to keep my lamda=1.02.
I cannot understand WHY when i start if from stationary, it is lean, and when i drive for 5-10mins it gets rich??
Only thing i can think of replacing is my N80 EVAP solenoid just in case it has been stuck open....