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LAF, Your IAC is good. It doesn't have to be axact. In fact the IID now compensates for what IAC is at idle. Mine varies between 28-34 depending on engine temp and outside air temp and pressure. Which makes sense.
89% BLM means the injector fires at 89% of what the calculated PW is (based on AFR map, Alpha-N map, and EFI inputs). So when you apply the BLM that changes the Alpha-N table, and then next time the calculated AFR is right on.
On the IID the Front BLM changes the Front Cylinder Trim Table and that table is a % of the rear actual PW (O2 sensor corrected).
I know you don't have the IID yet, but I would say that your IAC is good and go with that.
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05 Road King Classic - Sierra red pearl/Bassani Power Curve and Megaphones w/torque baffles/98" RevPerf BB/37g cam's/RevPerf lifters/DTT IID EFI/Stage 2 CNC'd heads by R&R(GMR) 9.7 CR/50mm Gerolamy Dual Throttle and filter/LMR-2 oil spring/500cc injectors/Super Premium Oil Cooler/Z+ Brake Pads/SE Clutch spring w/Easy-pull ramp and a bunch of this and that!
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