Why have a power supply that is stronger than the batteries in your car? If you batteries can not put out then that motor will never see those numbers on the track.
Anyways. I have been thinking about putting a 1/2F or 1F audio capacitor with my power supply box. I really don't need it now that I am going to LiPO.
I have noticed that when using a motor checker or starting a charge with NiMH the line voltage on my 32amp P/S drops just a little. Then I have noticed that when NiMH peak, the line voltage jumps. It has been bugging me to thing all those false peaks I have had could have been prevented by keeping the line voltage more stable.