Dagaz_Psi wrote: ↑
Sat Nov 28, 2020 7:43 pm
Why didnt it past smog in the first place?
I had the LH2.4 remapped because of the bigger turbo and injectors my car has. It wasn't remapped very well and was running really rich under light load, about 11:1 when it was emissions tested.
It turns out my starting problems have returned. Changing the skip revolutions during cranking to 0 (which I think I mentioned on here before) seemed to work most of the time but sometimes it just kicks back as it fires the spark plugs at the wrong time during cranking.
I've had a look at the tooth log to see what's happening. This is how it looks when it's running, which seems pretty good to me:
But this is how it looks during cranking:
Clearly the two smaller spikes in between the main ones are what's confusing speeduino. With skip revs set to 0 it can misinterpret a smaller spike as the gap in the flywheel teeth and try to start with the engine in the wrong position. With skip revs set to 1 or more the smaller spikes are causing it to lose track of where the engine is so it can't start it. It just turns over and over with no engine speed showing and no signals going to the injectors.
I have no idea where these smaller spikes are coming from. I've tried every different level of signal filtering in tunerstudio and none of them seem to make any difference. Strangely, if I do get the engine to start it will then start fine every time for the rest of the day. This only happens when it's completely cold. Any ideas?