Anyone tried this out yet? You can reach level 20 while still on Taris. You unfortunately will not be able to get any jedi powers or use a lightsaber later on.
Anyway, here's how the feat is pulled off.
1. Get assigned the accelerator quest via Gadon.
2. Enter the Vulkar base and choose to side with Brejik.
3. After being escorted out of the Vulkar base, go back in.
4. Steal the accelerator.
5. Go back to the Bek base.
6. Tell Zaedra you have the accelerator.
7. Do the race ( You'll only do this once ).
8. Speak to Bastila.
9. Repeat 5-8.
I think you get like 640 EXP points every time.