It very difficult to read anthing from deliceius tuning logs as they implement a lot of fueling and timing strategys in custom maps to overide factory ecu functions. also if its a racrom 10 tune ecutek have implemented full time closed loop fueling.
It appears ltft is disabled
best talk to deliceous.
the only thing i can see is high negitive stft is occurring when fuel system status is closed loop. If its racerom 10 then its possible the racerom 10 closed loop is fighting with the factory closed loop. Ive seen this in NA cars on racrom 10, the fix was to disable the racreom 10 ecutek cloed loop function when the factory closed loop is in operation using the engine load.
but very difficult to draw any conclusions unless you had access to tune files
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