In anything but Async fuel, the injections pulses are even, regardless of engine cyl count in MPFI applications. It is linked to DRP.
Async fuel fires the injectors every 12 ms IIRC regardless of DRP.
In most if not all stock bins it seems that Async is disabled anyway. I have tried to use it on a couple engines and have always turned it back off rather soon after, just because the engine didn't seem to want to run stable in that mode.
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