|Originally posted by La fiera:|
The support from MS told me that that happens sometimes because when powering up the ECU it triggers the coils on re boot.
The problem is more pronounced since I now have DIS and E85, before with the distributor and gasoline it was less likely to happen.
I know that with default settings, the fuel injectors give a priming pulse on key-on. This can be disabled if you wish by setting the priming pulse to zero.
I never heard that about the ignition coil(s). I'm going to check that on my car, with a spark plug outside of the engine where I can see it, and a friend turning the the key on/off.
If what you're saying is true, that's a serious flaw. If the engine is running at WOT while the CPU resets, then a spark could occur at a not-so-good part of the engine cycle, which could break things. I'm thinking of a scenario where a poor +12V power connection causes a power loss just long enough to trigger a CPU reset.
[This message has been edited by pmbrunelle (edited 02-13-2020).]