I have scoured the internet looking for the mass airflow sensor locations in an AMG GT R. Does anyone know? I have also removed the front plastic cover exposing the coolant tanks and intake pipes but cannot locate the sensors. Thank you in advance!

we don’t have MAF sensors, we have MAP sensors. Usually by the intake manifold

Interesting, my other turbocharged vehicles do. I often clean them out with MAF sensor cleaner. Thank you for the update. Is there a reason why we do not have them?

Yes, that’s correct. None of the GT variants use a MAF sensor.

On high-boost turbo engines like the M178, a MAP-based (speed-density) system handles very high airflow and boost levels more effectively.
It eliminates intake restriction (no MAF housing in the air stream) and allows for more stable calibration at high power levels.
The result is improved response during rapid throttle and boost transitions.

These engines rely on MAP (Manifold Absolute Pressure) sensors, IAT (Intake Air Temperature) sensors, and boost pressure sensors located on the charge pipes.

The MAP sensor is not a serviceable maintenance item, there is no scheduled cleaning or routine replacement.

If the sensor begins to fail, you’ll typically see DTC P0106 (range/performance).
If the sensor has failed completely, you’re more likely to see P0105, P0107, or P0108.

Thank you for sharing a great and detailed explanation! I guess that is one less item that I need to clean/service on this vehicle. Makes total sense! How do you feel about swapping the OEM paper filter for a BMC/K&N free flowing type? Do these cars benefit any for this type of modification on a stock setup? I know that it may come as a risk of passing smaller particulates into the turbo/combustion chambers so I am a bit hesitant. Thanks again!

Here is some interesting video. You will be the judge:

I’ve personally run the BMC filter on my Stage 1 tuned GTC, which still uses the OEM turbo (same size as the GTR) and boost up to 21 PSI. Honestly, I haven’t noticed any real performance gains. For me, it was more of a hassle and an added cost.

That said, I do think the BMC filter could be more beneficial on heavily modified cars with larger turbos running higher PSI, where/if airflow demands exceed the volumetric capacity of the standard OEM intake filter. In those scenarios, the reduced restriction could actually translate into measurable performance.
For now, keep your engine cleaner with the OEM filter.