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Originally Posted by Wayno
Be aware when you change CL scale, particularly at the top over 40g/s, it will change the LTFT in open loop.
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So basically I could apply the corrections to 2.5 volts, leave the middle part and apply the OL corrections, to avoid messing up my pretty good OL fuel trims?
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People worry far too much about fuel trims at idle and other irrelevant low load situations where AFR is a steady 14.7.
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I was more worried about the -8.44 when cruising at about 3000 rpm would affect my OL LTFT?
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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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What makes the middle of the scale particularly hard? Is another process required that using vgi's app?