Hi Rich.
What’s the RMS?
I have had the same question re knock input.

Steve Izett

> On 7 Jul 2020, at 3:38 am, argoldman@aol.com <flyrotary@lancaironline.net> wrote:
>
> Hi Fin, and all
>
> Been  pouring over the schematics etc. for ec-3 and em-3 that have been posted.
> At the outset let me confess that I am a rank dyslexic beginner at reading (and understanding) schematics.
>
> I have a ec-3 and em-3 which my records show that I purchased in April of 2010.
> Reading through the documents, it seems like the only change he made with the  6/13/12 update was to substitute a .001uf cap for existing at C28. Was the only change. For what reason was it done and is it suggested to make that modification.
>
> I also noticed that he has an input lead pin 38 IC1 for a knock sensor.
>
> Was there a software update between when I got mine and when he stopped shipping. Is it available and is it significantly important. Was the knock sensor included in that upgrade?
>
>
> HELP!!!  I'm learning just enough to become dangerous (mainly to my psyche) as I near the engine installation and testing (probably early next spring or with the weather we have been having--mid winter. (Chicago)
>
> Any suggestions (other than to can the RMS (already installed)) to soothe my psyche?
>
> Thanks again
>
> Rich
>
>
>
>