Quote:
Originally Posted by solidONE
Are your ratios similar in the .10 (0% pi) and .20 (70% pi) columns? Since idle loads after the engine is up to operating temps tend to float between .14~.20 g/s, I noticed this is where AFR will fluctuate quite a bit. I'm assuming the fluctuation in the di/pi % has a lot to stay about the fluctuating AFR thus the fluctuation in the fuel trims.
fluctuating fluctuations have fluctuated...
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I run 0% up to 0.3 load and 70% at 0.4. Full DI at low load for me stops a bit of erratic behaviour when AC cuts in and out. I also have bigger port injectors which have a larger non-linear region than stock which accentuates the split fuelling problems at low pulsewidths.
I do see quite wide variations in AFR trims at idle speeds but not at low load whilst cruising - there is a lot of intake temp variation under the hood when the car is not moving and I largely ignore these now.