my MCU is older one, car was delivered Dec 2017 i can notice speed improvements in everything, especially maps and browser. imho the maps now function around 75% of the Model3 speeds I have seen on videos (and about 50% increase in original speed). perfectly acceptable for my needs. the browser now works but is still pretty slow to load complicated websites like CNBC and such. wish there was an option to remove banners/ads/etc and just have text and main article images. i can go to youtube and see video preview images but the browser won't load any video claiming limitations of HTML5. it is usable but nowhere near the speed of my browser on my Galaxy S9+. i won't be updating MCUs unless it is very inexpensive like less than $400.