You mentioned plus/minus 5 on the STFT as "a trigger" for LTFT changing. [iNTEGRATOR/bLOCK LEARN] is a partial PROM disassembly from a vehicle. It shows plus/minus 5 as the trigger for -in this case- BLM. This one also shows that BLM update happens every 400mS... Login to read more.

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