Hello,
The problem was:
low performance, high fuel consumption, negative error code in the control unit.
Cause: Although Mazda was reluctant to believe that the Mass Air Flow (MAF) sensor was the cause, the individual measurement clearly showed that the MAF sensor readings were completely outside of the specified values.
Result: New engine (LMM), now great performance and fuel consumption back under 6 liters, awesome!!!!!!!
Just a heads-up for everyone who's being told: 'The error analysis in the engine control unit (ECU) showed nothing, so it can't be the mass airflow sensor (MAF).' It still could be the MAF!
Mazda only believed me after I protested, and I visited two different Mazda workshops.
It's important to acknowledge that the LMM likely rarely causes problems, and this was probably a novel experience for them.
Thank you again for all the contributions.
Greetings.
Rob's.