Definition for SFI/SD3

[Dashing ZX2]

I was finally able to play around with this again and have some interesting results.

I started out with the above bin with just changing the injector size to 19 multiplying the crank pw by 1.57 as instructed. With this it would pop and sputter but not come alive and it really seemed like it wasn't firing on all 8. I then played around with the crank pw, first adding more pw, which made things worse, then taking it away. It actually worked best after dividing the original crank pw values by 1.57, so smaller than the original AJON values. This may have been because of an excess of fuel sitting around from the previous attempts, but this couldn't be the entire problem either. With the smaller crank pw numbers, we were able to make it keep running, barely, by pumping the throttle. Any constant throttle wouldn't do it, but pumping it would keep it alive. I wanted to keep it running long enough to get some heat in the header to verify which cylinders were firing, because it was obvious at this point that it wasn't running on all 8. Turns out, only the front four cylinders were warm, so it was definitely not firing all of them.

From there, just to see what would happen I changed the number of injector output ports to 8 and number of injectors per output port to 1 (originally 2 and 4) with no discernable difference in results. I did this since this is a sequential injection ecu and I was curious. I didn't expect this to work considering the xdf is for batch fire I believe, but I wanted to cover my bases.

The last thing I did to play around was to mess with the number of pips between injector outputs, just for fun. Again I didn't expect this to help, I just wanted to see what would happen. It was originally at 4, first I set it to 2, which made it so only two cylinders were firing, though it did stay running with throttle pumping. Oddly enough only cylinders 1 and 2 were the ones firing. Then I tried setting it to 8, which just made it garble around, backfire and not run at all.

After that we called it quits and unplugged the quarterhorse to verify that the car still functioned without it, which it did, so no harm no foul even with the fooling around. Needless to say I didn't play around with the ve or anything else since I couldn't even get it to idle.

I'd like to dive deeper into how all the functions and tables work together, but besides reading the notes, I'm not sure how to do that. A flow diagram would be great, but I doubt that exists as public info. So, could anyone share what the best way for me to learn the inner workings of all this is? Thanks for all the help so far, I'm looking forward to any responses and getting a better understanding of what’s happening.

[decipha]

its not firing the other bank because the port assignment is wrong

Thats typical when using an incompatible hardware code for that strategy.