HKS AFR?
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Join Date: Nov 2000
Location: 32 cylinders and many cats
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It is a one dimensional adjustment of your fuelling and when I built my own it exacerbated a lean area low down and killed spool up but assisted top end power. A bit unsophisticated. There are "super" versions which give more control but still very poor resolution. I got fed up with all this crude piggyback stuff personally, but they do have a role on some cars.
It interfaces to the MAF signal and adjusts the voltage.
It interfaces to the MAF signal and adjusts the voltage.
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