Reviving the thread to ask if anyone can send me the firmware that vl-alexander provided above? Unfortunately the link is dead.

It would be nice to see this function implemented in the official firmware, but in lieu of that I don't mind trying to adapt vl-alexander's code myself.

It's on the 1.4 firmware so it's as old as the hills(only firmware source code released to the public). If you go to the megasquirt extra site and add add a post to the MS3 1.5.3 wishlist maybe that will help(I'll add my 2 cents also). I tried to get it implemented but it just got ignored.I'd like to see it implemented also since vl-alexander did the work for them and was kind enough to add it here.It's a pain to premix a street car.

Man, I love this forum. No matter what you need, someone always comes through with it. Thanks for the firmware :)

I made a post in the wishlist, but I need to wait for mod approval before it's visible. It's a shame that development has slowed, especially since this feature appears to be already complete.

How about Arduino support, so we can use a single trigger wire to control flow from any ECU?

I didn't want to spoil (since I am going to write a detailed post about this in the near future) but I will soon be offering that exact solution as a pre-built and programmed unit, including water-resistant case and Deutsch connector with pigtail.

I don't have exact pricing yet (especially since I have no idea what demand will be) but I have several functional prototypes, and just finished the first "production" model.

Details to come.

You wondrous bread! Perfect timing. I would like to help you trial run these. Please put me on your list as an early adopter. I will PM you.