so the ecu is lying, and the PI duty cycle and pulse width that halves, and DI injecting 50% of fuel at an angle of 45° are just not true? honestly dont think so..
https://datazap.me/u/tommbrz/io-cold...47&zoom=59-348
Engine cranks with PI only, then switches immediately to 50/50% PI/DI as you can see in the log
THEN (you can't see in the log because it's too short) it switches to 100% PI at idle for a while, THEN it switches to 100% DI on idle, and follow the ratio tables
But at this point the cold start is already over with no late ignition and no late injection
the loud part is mostly when port and DI are 50/50%
The change in sound anyone can hear during every switch of phase is pretty noticeable , like the change in idle stability because of the 2 types of injections that aren't nicely scaled to each other