Hey guys,
I have a friends RC car which I am trying to setup/fix.
It has a centre differential and from driving it, it handles much like a FWD car. It has a rear swaybar so it kind of understeers on throttle (the front wheels start spinning) and oversteers off throttle. It's fairly easy to drive though this way however it lacks acceleration because it just spins up the front wheels

I have a locked centre diff for it as well and wondering which would be best to use? Open or locked?
I notice with my car which has no centre diff, power oversteer happens relatively often where as the car with the centre diff has no chance of doing that

Suggestions??