no it doesn't. the only reason you might decrease the injector constant is if you run speed density and exceed 100% VE which i guess is unavoidable with a turbo, however halving it (so 100% VE is actually 200% VE) might be a bit extreme. it would require scaling the entire VE table by the same amount. if you were running a maf there should be no need to do that. every single other thing in your calibration will get screwed up too.
maf calibration tables and ve tables have really nothing to do with open loop and closed loop fueling methods. in a maf system the maf table is how it estimates airflow. in a speed density system the VE table is how it estimates airflow. that's a primary factor in how much fuel it injects for sure, but it has the same effect whether you're in open loop, closed loop, power enrichment, or whatever.One other curiosity for now: Is the primary controlling factor for closed loop fueling on a MAF system the MAF frequency calibration? I see stoich inputs (which I presume it uses as a target?) and a lot of other inputs for open loop/PE/etc
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