I don't think timing will really do what you're looking for, normally it doesn't get changed on those 4 pole motors. Speed control settings like punch and the throttle frequency will change how the motor feels quite a bit. See if your buddy knows what those at set at on his.

Also worth noting the 3800 is a 540 motor, but hobbywing sells a 540 and a 550 4300 so you might not be comparing apples to apples.

Here is the 540
https://www.amainhobbies.com/hobbywi...401059/p580786

and here is the 550
https://www.amainhobbies.com/hobbywi...401152/p580789