To run LED lights for the turn signals you have a few options. You can run a bulb that claims to have resistors built in (they don't really work), you can run an inline resistor, or you can replace the flasher relay with one designed for leds.
If you run the inline resistor the resistor will generate a lot of heat. There is a thread write up that explains how to run the led flasher relay but the condensed version is that you buy a relay for $10 on amazon, a 12 pin to 8 pin adapter from toyota, swap pin 10 to slot 11 in the harness, and buy whichever led bulbs you want in your turn signals and enjoy working turn signals without hyperflash.
i did all of that this morning on mg gx and i enjoy the results.