Save some Storage Memory!!

[Biker1]

I see TeleNav uses alot of device memory. I use Google Maps so if I delete all associated TeleNav files, can I download them at a later date?
Does freeing up Device storage memory make the device run smoother?
I thought it did at first but I am not sure.

UPDATE:

I deleted>>
1) Touch Mobile Guide: approx. 8 MB
2) Telenav: approx. 4 MB

Total Main Storage Memory freed up by deleting 2 folders and all associated files is approx. 12 MB

Total: 91.05 MB
In use: 54.27 MB
Free: 36.77 MB

What to do with all this freed up memory?
I found that there are cabs to download Telenav if I ever need to.