I think the differences would be small in most places.

I think that the eastern part of the north-eastern continent should be all humid (it's supposed to be more or less like N-E China). As you move west it becomes a steppe between the two elevations. That was already what i had in mind but it makes it more legitimate.

For the eastern part of the same continent: mountains would make the central and eastern part drier. Another steppe but I don't think it's dry enough for a desert.

In the center of the map,. higher elevation would turn A climates into C climates. I'm not sure if I can differentiate the vegetation of these two climates. No major impact.

S-w: the rain pattern could change a little.

N-w: you have a lot of closed basin. I'm not sure why you have so many, Is there an explanation?
The impact on rain is mitigated since the mountains are mostly in the center of the continent. But they do make it drier.


Note : I'm saying all of this but I haven't showed the new version of the climate map. I'll do that later today.