Originally Posted by
Six_Shooter
It was a relay that I was getting at earlier, but with only 4V a standard Bosch type relay wouldn't work. You'd still need a small amplifier circuit to drive the relay (Only about a dozen ways to do that haha).
I was going to suggest interrupting the tan/black bypass instead of the coil drive circuit directly, but then remembered that this would cause a check engine light if a simple interrupt circuit is used. I have half a thought on how I would do this without a CEL appearing, but this would only be useful if returning base timing is the desired result AND it would limit torque enough.