Thanks for the advice.
I will go with BAM injectors and retune.

DELETED

If I were you I would try different (non REVO) tune.

Sorry for the late reply,
Do you mean engine oil entering the combustion chamber of the engine via the piston springs or the spark plug?
I haven't seen any drop in oil level. I had a minor leak around #1 Spark plug coming from the valve cover gasket  which I have replaced.
I haven't done an engine compression test.

Also after changing the injectors to 380cc my fuel trims goes to -19,5% which indicates that the injectors haven't been registered or the new REVO map is not for 380cc.....

I am trying to figure out how to handle the issue with REVO.

I will report tomorrow that we have a meeting.

I also attach 5 runs logs made with APR logging methodology ( https://www.goapr.com/support/datalogging.php).

All runs made with 3rd gear in an uphill road.
For each run 2 attempts were made, one with full throttle and one with part throttle (ex. 51 means 5th run 1st attempt, 52 means %th run 2nd attempt).

When accelerating with part throttle (about 30%) the acceleration is much better.
Also when the specified pressure is >2000mb the hesitation starts and Adv.Timing is retarding >3o.
Finally at 2500 rpm there is a major overboost and (+250mb) and the actual lambda drops rapidly.

I will keep you informed.

As I said I was a happy REVO customer with my A3.
I was looking for a "safe" option.
My ride to work is mountainous road and all I needed was the power to overtake trucks end enjoy the ride.
I wasn't looking for the fastest setup.

REVO guys are willing and helpful but I think they aren't able/qualified to find the root of the problem, which probably is the remap, and they blame all the other systems of the car.

Tomorrow it will be my final effort with REVO.

Thank you very much.

PS does anyone has any ideas by checking the Logs? Any help would be great in order to make a case with my problem.

Thank you very much for the fast reply.
I used the following logging method :
ROUND 1 LOGGING:
Use for Boost and Fueling
Diagnosis
Item # Vag-Com
Block # Description
*Not Applicable to EA888 TSI/TFSI Engines.
1 001-1 Engine Speed
2 014-3 Misfire Sum
3 031-1 Lambda, Current Value
4 054-3 Accelerator Pedal Position
5 054-4 Throttle Plate Angle
6 101-3 Injection Timing (Median)
7* 103-1* Current Fuel Pressure*
8 114-4 N75 Duty Cycle
9 115-3 Boost Pressure (Specified)
10 115-4 Boost Pressure (Actual)
11 230-1 Rail Pressure - Specified
12 230-2 Rail Pressure - Actual

ROUND 2 LOGGING:
Use for Boost and Timing
Diagnosis
Item # Vag-Com
Block # Description
1 001-1 Engine Speed
2 003-4 ignition Timing
3 020-1 Cylinder Ignition Angle Delay (cyl 1)
4 020-2 Cylinder Ignition Angle Delay (cyl 2)
5 020-3 Cylinder Ignition Angle Delay (cyl 3)
6 020-4 Cylinder Ignition Angle Delay (cyl 4)
7 031-1 Lambda, Current Value
8 054-3 Accelerator Pedal Position
9 101-3 Injection Timing (Median)
10 114-3 Engine Load (actual)
11 115-4 Boost Pressure (Actual)
12 230-2 Rail Pressure - Actual

ROUND 3 LOGGING:
MAF/Load-Specific Diagnosis
Item # Vag-Com
Block # Description
*Not Applicable to EA888 TSI/TFSI Engines.
1 001-1 Engine Speed
2 003-2 Intake Air Mass
3 031-1 Lambda, Current Value
4 054-3 Accelerator Pedal Position
5 054-4 Throttle Plate Angle
6 101-3 Injection Timing (Median)
7* 103-1* Current Fuel Pressure*
8 114-1 Engine Load (specified)
9 114-3 Engine Load (actual)
10 115-3 Boost Pressure (Specified)
11 115-4 Boost Pressure (Actual)
12 230-2 Rail Pressure - Actual

ROUND 4 LOGGING:
Misfire-Specific Diagnosis
Item # Vag-Com
Block # Description
1 001-1 Engine Speed
2 003-2 Intake Air Mass
3 015-1 Misfire Cyl 1
4 015-2 Misfire Cyl 2
5 015-3 Misfire Cyl 3
6 016-1 Misfire Cyl 4
7 054-3 Accelerator Pedal Position
8 054-4 Throttle Plate Angle
9 101-3 Injection Timing (Median)
10 115-3 Boost Pressure (Specified)
11 115-4 Boost Pressure (Actual)
12 230-2 Rail Pressure - Actual

ROUND 5 LOGGING:
Use for Boost and Timing
Item # Vag-Com
Block # Description
1 003-1 Engine Speed
2 003-2 Intake Air Mass
3 003-3 Throttle Angle
3 003-4 Ignition Timing
4 020-1 Cylinder Ignition Angle Delay (cyl 1)
5 020-2 Cylinder Ignition Angle Delay (cyl 2)
6 020-3 Cylinder Ignition Angle Delay (cyl 3)
7 020-4 Cylinder Ignition Angle Delay (cyl 4)
8 031-1 Lambda, Current Value
10 114-4 N75 Duty Cycle
11 115-3 Boost Pressure (Specified)
12 115-4 Boost Pressure (Actual)


I tried MElogger with no success.
I will try again tomorrow.

The symptoms are:
Engine performance hesitation/oscillation of output.
When pressing throttle about 1/3 the output is oscillating.
When pressing more than 1/3 throttle the output is less and the oscillating is greater.
Thing are worse at 4th, 5th and 6th gears.
0-100 comes in almost 12 secs.
What I saw from logging is that the above occurs when pressure goes above 1bar.
With stock injectors the injection timing was from 20 to 38ms while LTFT were +-5%, now with 380cc timing is up to 19ms but LTFT are -20% and rising.



I hope I could describe the feeling.

Thanks again
Alex

PS REVO also installed LPG in my car.
In LPG the performance is less but the symptoms remain.
Also I found they used the pressure pipe in air intake to make a junction and feed LPG MAP and LPG Vaporiser with pressure info. I told them to repair as the same line feds DV valve control via N24o