So just for the fun of it I decided to take my Supra completely apart...to my dismay I found out that only ONE of the two transistors had heatsink paste on it. Very not good! I fixed that mad quick w/ some CPU h/s paste I had. While I had it apart I also cut out the openings on the bottom of the chassis to allow more airflow to the IC board heatsink and then completely resoldered and rerouted all the power wires. Hopefully my piece will run cooler now.
If you have the skills and/or patience I highly suggest taking your car apart and adding more h/s paste to the two power transistors.
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