My Model Y is an early March 23 edition from GigaTexas, complete with the 4D1 rear motor. 19-inch wheels - ;-)
The 4D1 motor in stock form feels more torquey to me and holds the curve at a higher RPM than my M3 with a 980 motor. This is per the butt dyno.
I just completed the data logging with Ingenext. They dynamically created the Ghost flash based on the data and we installed it on my MYLR. They noted in the data logging that the motor had the capacity for more power output than the 980 and they turned it ON. The test drive felt fantastic. Very strong. I don't have a dragy, but will have to find time with someone who does to do some testing.
I can 100% recommend it. This is my third "chip" from Ingenext since 2018 and they have top-notch service and support. If you were on the fence. Get off of it.
I will be traveling for a few weeks but will do my best to answer questions!
Best,
-Jim