When you Y 2 motors, does it affect power?

When you Y 2 motors, will it cut the power in half? or will it run the same power as in the program? if i need both motors at 127 what would i do?

Ya I think you are miss reading that thread.

The motor will be behave identically to if it was plugged into another port on the same breaker of the cortex. Any speed loss you might see would have also happened regardless of where it was plugged in and is just caused by more power being drawn in total.