Does not matter, it is visible from log already where the problem is.

Do the EGR just in case, but issue looks to be low boost request, and it is following the high altitude map.
This of course causes lower MAF values and then smoke limiter limits your IQ.

Everything else is running full tilt. If this is the case you need a new ECU and clone it via connector (real tools) or via BDM (clone tools).
Try to find and see if baro pressure is jumping to silly values when you are losing power, this is a common fault on these ECU's.

There's no limp mode on ECU side here, as torque request is fine all the time.

Log the baro pressure when you have a power cut.
It's clearly an intermittent issue, there is zero point looking at values when the issue is not present.

Do confirm - there are absolutely no codes on the car, right? I mean precisely zero. You are not filtering them and thinking "ah, this is not important"?

Also log the fuel temperature when it's doing it.

What should I be looking at for injector quantity?

Sent from my EML-L09 using Tapatalk

If fuel temp is 90 degrees then there's your fault, replace the sensor.
It should never ever be above 30-40 degrees in normal circumstances.

Anything over 72C it will start cutting power.

Air suspension overheat means you have a leak, this is causing the compressor to overheat trying to keep up the pressure.
If you don't fix it, then you will need to replace the compressor on top of fixing the leak.

autoscan and logged temps (not a 3rd gear wot log, just normal driving), ignore the lambda fault this is the lambda I swapped over from the other car and it was logging this same fault in the other car.

You're welcome, yes it has "virtual fuel temperature".
You need to rev the engine above 2500 rpm to start seeing the real temp.

If the fuel sensor is knackered just enough it will just limit TQ and not throw any codes.
If it's sitting at 70C all the time at low RPM it's 100% damaged.

It's a matter of figuring out which sensor is sending the bad signal and causing the torque limit.
With the real limp mode you don't have any power at all, like you can't even go over 3000 rpm.

For air suspension get your soapy water spray bottle out.
It doesn't have to lose height, probably the leak is not very bad, but this code 99% of time means it has a leak.
It is very rare for the compressor to go bad and start overheating if there is no leak.

Hello,

very good post and I think here is realy smart people in this forum. So I will add my problem to this post, because it is very similar, but not the same.

Car is Audi B7 3.0TDI BKN MT mapped, EGR off, DPF off as I know. Car was mapped more than 5 years ago. Till now there wasn`t any problems. Not sure if flaps is off or not.

Reading this post I think my car has limp mode without any faults. Because I can`t rev more than 3000 rpm. I`m not sure why I`m not getting any fault, maybe that who mapped the car, deleted some faults, but not sure about that.

All started one day I was pulling with 3rd or 4th gear uphill, when I little bit released pedal I get limp mode. I was looking at fuel and turbo pressure. I think that is overboost limp mode, because only strange thing  I can see when I watch is a turbo requested and actual pressure. When I pull hard, everything is fine, car is pulling as it should, when I get of the pedal and leave in gear, than I try to pull again and there is no power anymore, it can speed up but like it has only 100hp. After I switch ignition off and on again I can pull, when off pedal again limp mode. The same, when I start car at home, slowly driving till I get to normal road, I already have limp mode. So watching turbo requested and actual graph I see when I`m off pedal in gear, actual pressure is 0.3bar higher than requested and it slowly drops and reaches that requested. I will ad graph later today.

And this started that day when I wass pulling hard uphill that was first time, and than day by day it started to appear more frequently and now it is almost instant limp mode. While I get to the normal road without any pulling it is in limp mode and can`t pull without cycling ignition.

I have done some things:
   Replaced MAP sensor
   Replaced Air filter
   Replaced Fuel Filter
   Cleaned VNT

I watched graph for turbo actuator, it almost all the times copy requestd. Did test on actuator in one end it requests 80.8% and it goes to 80.8% in other end it requests 20.45% and it goes 20.95% I don`t know if that 0.5% is a problem.

Maybe if there is somoen who could help with this situation let me know what graphs should I make and post here. I think today I will have time to make them. I don`t know how good those graphs will be I`m using Thinktool thinkcar.

Thank you in advance to everyone who will try to help and sorry for my english