Speeduino

I just looked old Mitsubishi colt 4g13 Workshop manual and i find out this. Is this possible in speeduino? It could help lot at E85 cold start.

Not really. But adjusting injection timing when cranking helps little bit, which is already possible. This helps too: https://github.com/noisymime/speeduino/pull/872

And this one: https://github.com/noisymime/speeduino/pull/612

The number of Skip Cycles can have a noticeable influence. Correct Dwell Compensation for a hot cranking spark also helps, along with accurate Injector Voltage Correction for proper fuel delivery at low cranking voltage. Time is the largest factor, as E-fuels are slow to vaporize at low temperatures, and why it seems you need so much fuel. It needs vapor to burn, and can need less fuel if it has more time to vaporize. Pausing after key-on prime before cranking is another example, or Injector Close Angle of 540°+ at low speed, etc. This is one likely reason for the OEM simultaneous injection, as it provides more fuel dwell time in the runners for vaporization. Have fun experimenting and tuning.

pazi88 wrote: ↑Tue Dec 20, 2022 5:22 pm Not really. But adjusting injection timing when cranking helps little bit, which is already possible. This helps too: https://github.com/noisymime/speeduino/pull/872

And this one: https://github.com/noisymime/speeduino/pull/612 uno online

Your idea is great, I tried tweaking it and it worked better, thanks