[Diy_efi] About MAP sensing and it's jitter

[Alexei Pavlov]

alexis.pavlov at st.com wrote:
> 
> tsokorai at xperts.cl wrote:
> >
> > Right now in my test code, one sample is taken for every cylinder, as my
> > timing marks on the crankshaft are 4, 90 deg. apart. That makes 8 signals
> > every engine cycle (2 crankshaft rotations). Is it a good idea to still
> > lowpass filter them?

I've looked at the signal charts. I still find signal dirty.
The danger with your approach of sampling is to undersample, even
if many diy EFI systems seem to do the same way.
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