Can a larger controller make your cart actually go slower?

[outdoorsed]

So here is yet one more question. Is it possible that a larger amp controller can cause your car to go slower than the factory controller? Because it seems like ever since I installed the five hundred amp my cart go slower than it did with the 350.

[BobBoyce]

Originally Posted by outdoorsed

So here is yet one more question. Is it possible that a larger amp controller can cause your car to go slower than the factory controller? Because it seems like ever since I installed the five hundred amp my cart go slower than it did with the 350.

It's all up to how the controller is programmed to perform when it relates to modern controllers.

[JohnnieB]

Originally Posted by outdoorsed

So here is yet one more question.

Is it possible that a larger amp controller can cause your car to go slower than the factory controller?

Because it seems like ever since I installed the five hundred amp my cart go slower than it did with the 350.

Yes it is possible since top speed is determined by battery pack voltage at the time and the more amps drawn from the battery pack while accelerating to top speed the lower the back voltage will be when tops speed is reached.

The pack voltage drop almost instantly when amps are drawn, but takes several minutes to recover. Try accelerating very slowly from a standstill to minimize voltage drop to get a higher top speed.

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As BobBoyce mentioned, could be how 500A controller is programmed.

What make/model 500A controller?

With any type controller compare voltage between the controller's M- and B+ terminals to the battery pack voltage when at top speed with pedal on floor. If they are the same voltage, the controller is wide open.