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[Doctor Gollum]

Ta. Garage that did the tyres will do a free emissions check, so will go down that route if required, just to confirm the diagnosis.

Obviously no EML suggests that the ecu is happy, which certainly points to the cats.

Even with a fresh MoT it will be going soon, if only for Mother's benefit. 

[Doctor Gollum]

Presumably 2510-1 Boost pressure regulator is not a good thing

Especially when attached to a pending P0244...

[Marks DTM Calib]

I wouldn't fit non type approved cats unless you are just getting an MOT to offload the car 
even then a non type approved cat may struggle to even get you past the test if the car is overfueling .
No vac or zorst leaks you say, have you checked the common link ,the EGR  assuming it has one ?
10% plus LTFT seems high to me assuming you reset the trims and it returned high
long term overfilling will rape the cats
with no post cat monitoring ,they could be ******

MOT emission result will also give an indication

I asked ages ago on another thread  the actual values would help if available agreed 
if you're paying for MOTs or pre MOT emmission tests DG the NT should print you out a result

If the Lambdas are switching then its not over fueling 

[Doctor Gollum]

It smells a bit rich, the ecu is is a 3.2 one feeding a 2.8...

However, electrically it is happy enough. And presumably it works by supplying fuel to match the air demands.

[Marks DTM Calib]

Thats the closed loop control.

ECU adds more fuel until there is no oxygen detected in the exhaust (so running slightly rich), it then progressively backs the fuel content off until it sees oxygen present in the exhaust (now running slightly lean), this then repeats about every second. Hence if you see the mixture control Lambda switching you know the system is running closed loop and the fueling should be good.

Now as part of this it will also learn some adaptions, long term ones being a key indicator as these are used to correct the default map and in theory are there to compensate for worn components over the life of the engine. So given the ECU is for a different engine, seeing the corrections you have is no surprise

[Doctor Gollum]

Such as the retarded timing etc?

[Marks DTM Calib]

No, timing is a separate loop, where by the ignition is retarded until knock is detected, then it advances it by 2 degrees and repeats. No need for correction values as its closed loop from the moment of start (emission control has heat up times and WOT whee it is open loop)

[Doctor Gollum]

Apparently it wasn't hot enough. Got it warmed up enough to melt lava and it has passed an emissions test, will post the values later, but currently having the rest of the MoT done...

[Viral_Jim]

Probably suggests the cats are getting 'tired' then

What are you swapping it for?

[dave the builder]

well if it passed the emissions we know the HCs where less than 200 ,CO % vol sub 0.03 and Lambda within range of 0.93 to 1.030 

good luck with the rest of the test 

Probably suggests the cats are getting 'tired' then

2 tins of Whiskers and a rest by the fire and they will be fine 

[Viral_Jim]

A brick fetishist and a comedian, who knew  .

[dave the builder]

A brick fetishist and a comedian, who knew  .

Don't knock "BRICKS"    they're the building blocks of modern ......

[Doctor Gollum]

Failed on headlight aim and a dicky xenon...

A few minors to boot but nothing unexpected.

So I call that a win

[dave the builder]

Failed on headlight aim and a dicky xenon...

A few minors to boot but nothing unexpected.

So I call that a win

that shouldn't  cost much to resolve then 

[Doctor Gollum]

Already done.

Halogen units back in, the headlight range and ballast plugs  bagged and tucked away and the fuse pulled.

All working as it should tested and issue free. Retest booked for Friday afternoon. 

The alternative is dicking around trying to get a pair of new ballasts within the ten working days/work commitments...