Custom reluctor ring, suggestions on where to get one

Different sensors, have different operating points depending on sensor design, target material, shape and proximity. Cylindrical sensors do not trigger at center, they trigger before, and release after. How much before and after depends on sensor, and target related parameters. Professionals that apply sensors for position sensing, typically evaluate sensors, and target in a test setup, then use the imperial evidence for design.

When there is uncertainty about how the ECU handles sensor inputs, sensors signals are typically simulated using specially programmed micro controller. The ECU is then bench tested, monitoring with logic analyzer on sensor signals, and ECU driven outputs tor ignition, fuel and other controls.

I speak from experience, it works. I do not ponder as much, as I get busy test and evaluate, if problems exist the tests indicate what.