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Be aware when you change CL scale, particularly at the top over 40g/s, it will change the LTFT in open loop.
People worry far too much about fuel trims at idle and other irrelevant low load situations where AFR is a steady 14.7.
You can scale OL for 0 LTFT with tools, but then you have to know how to tune the middle of the scale to generate 0 LTFT reliably when actually driving the car. That's the hard part.
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