Car appreciation... the aesthetics, the engineering, etc

Beautiful Amazon. We had a tuned 123gt for a long time when I was young, and I still get goosebumps from that straight four with webers sound. The best time was when the exhaust broke on the way to Italy which resulted in cheering Italians for two weeks.
Here it is, only picture I have from 1992.
Sometimes I think about looking for the car and buying it back.

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You really should, it'd be one purchase you won't regret. An Amazon is on my list of cars to own, after I get something a bit more reliable.

Oh I know I should. But the 123gts are kind of expensive. If I had that kind of money I would probably go for a 142 thats my age and not a car thats older than me. Or find one thats already made into a classic racer. Like this one, raced since 1976 by the friend who took care of the GT and is an amazing tuner:

ME4.4 - doesn't monitor intake temps.

I think it's time for a MAF delete.

How is it compensating for increased intake temps then?

That is a good question. Knock sensor?

Is it a hot-wire MAF?
If so it requries knowledge of IAT to calculate the airflow (and often has a temp probe built in)

Can you get the fuel trims (short and long term) from OBD2?

From what I understand there is a IAT sensor in the MAF but only the later cars use it

From turbo dynamics:

Going overboard to a sizus-maximus MAF-4 sensor to closely match your maximum air-flow with the maximum output-voltage ends up causing low-flow problems. You get an idle that is irregular, stumbles or dies completely. Or the mixture is so rich at idle, you'll never pass emissions; there are people who remove and re-install their MAF kits regularly just to pass emissions!

So it could be, that during normal operating temps the new MAF is ok, but in the very rare to everyone else in the country, but very regular to us operating conditions of Central London, the new MAF is unsuitable.

OR, how are you controlling ignition? Could it be that it's not retarding enough at high IATs.

Sorry if I'm banging on about intake temps, but to me, stuck in traffic for a while then car cuts out on a FI car with big turbo screams intake temp issue.

Bosch Motronic 4.3, distributer, 1xcoil, plugs.

The idle is now ~1,000 rpm when it used to be 800 rpm before the MAF got so much larger.

It just passed it's MOT with the new MAF btw, including emissions test.

I might have a solution:

This Bosch Motronic is mappable? Who mapped it last?

Tim, the chap who looks after the car, after he fitted the larger MAF, new intercooler etc etc.

Replace it with an XJ-S?
That is a good idea.

An excellent idea sir

a) I don't play golf
b) I may be getting old but I'm no where near that old
c) I will not be voting for UKIP in the election.

Does not compute.
a) You own a Volvo estate - possibly the most 'golf club' car in history.
b) And before Rovers took the mantle, surely the most quintessentially 'old person' car available.
c) Nigel Farage owns a Volvo estate:

Now the XJ-S on the other hand is a car for an international man of mystery.

Could be vapour locking? In theory it shouldn't happen with a good fuel system but I've definitely had heat related problems with my Aeromotive A1000 (I'm guessing with all the new GGs you have an aftermarket pump too.) Check mounting of the pump, pump controller function, fuel pressure regulator and fuel lines running past any hot spots under the bonnet.

There are no codes thrown when it shuts down - which I would expect from rich/lean.

Therefore it might be the crank position sensor, which won't record a code if it sees zero revs and tells the ECU that the engine has stopped, and therefore that it should cut fuel/spark.

Although why it would not then start until it cools down is odd, unless it can't read the cranking rpm whilst hot.

Ignition coil(s) breaking down with the heat? 90% of fuelling problems are electrical...

New coil arriving tomorrow to eliminate that.

However- would it not have displayed it's evil when under heavy load at Castle Combe?

Rather than at idle?

Whatever the answer to that it's getting swapped tomorrow just to remove it as a possible cause.

This seems very reasonable.