Starts great and instantly when cold, but takes several cranks and eventually starts when warm?

Hello,

It almost sound like an issue with one of the sensors.
It could be a faulty crank position sensor. Typically when the crank sensor goes bad it faults when the engine is hot.
Many times a faulty crank sensor will not trigger the engine light.

You might find these articles helpful:

https://www.2carpros.com/articles/how-a-crank-shaft-angle-sensor-works
https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

You could have an issue with the injectors, but if the injectors were the issue you will probably have the starting issue all the time and not just when its hot.

I have attached the crank sensor diagrams for your reference.

Please let me know of any questions.

Thank you.