I'm content with a pre-set spark curve of my chosing...
I have it all plotted out for when I send my chip back to get re-flashed. All sorts of good stuff going on...
The resistor can be used to alter part thottle timing. Since it uses the Chips/PCMs tables during WOT.
The S-AFC can modify chip fuel tuning without the need for the chip to be re-flashed once you have your optimum advance curve, redline, & secondary point (for those who will have them :rolleyes: ).
Yes I ordered one...

Even if I made half the IS300's gains 7HP/6TQ - that beats nearly any other mod. 10/10?, 15/10? for ~$400... Plus the ability to "re-tune" it later... ...and a laptop to record it all on... I promise to share...
