If you’ve got a Model 3 with two USB-A ports at the front then the max you’re going to get regardless of hubs or anything else is 5V/2A for about 10W.
The post-June 2020 cars that have 1 x USB-C and 1 x USB-A at the front can do 9V/3A for 27W on the USB-C port, 5A/2A on the other (the rated spec)
If you want MagSafe/Quick Charge/fast charging on the older car you’d either need to run off the 12V supply, or retrofit the newer USB hub etc.
On top of all of that the original Taptes hub is known to have issues with power, as internally it is a splitter rather than a hub, particularly if you’re already using it with a drive attached for Sentry.