I'll be following. I too switched to dual coil plugs and have wanted an automated way to light them correctly. I'm not an electrical engineer by any means, but I don't think it'd be all that difficult to build a box that varied on-time based off a thermistor reading. I think the older 6.9 controller did that, but read that they would often fail in the on position.
I would think one could even add a screw pot to it to make it variable and tailorable to each truck. Fresh batteries and good compression wouldn't need near the glow time that something worn out would need.
Don't get me wrong, the push button was easy enough and simple enough. It just gets tiring having to explain to the wife(or anyone else that's mechanically uninclined) what to push, how long to hold it, and why you have to do such a thing.
and why I have the old pile
and why I have so many vehicles
and why the house isn't finished
and why can't I just be normal.......