MS3 pre-1.6 alpha 3 firmware

Testing and development of Megasquirt 3

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ShirtUser
Master MS/Extra'er
Posts: 511
Joined: Wed Jun 29, 2022 4:38 am

Re: MS3 pre-1.6 alpha 3 firmware

Post by ShirtUser »

Looking through all of the changes since 1.5.2, that's a lot of work and some really good things in there. Most of it I don't need (yet), but I appreciate how much goes into this.

The MAP prediction looks really interesting. I gather the idea is that the table values are how much to add to the load value at a given TPS and RPM intersection. Maybe reducing the need for AE to some degree? But, also affecting ignition timing.

Is there more guidance or reading on this? What do you think about enabling this for MAF loads (currently, the tables are only available for MAP based loads)?
Christian_Scirocco2
Helpful MS/Extra'er
Posts: 133
Joined: Sat Jul 24, 2021 8:16 am
Location: Germany

Re: MS3 pre-1.6 alpha 3 firmware

Post by Christian_Scirocco2 »

Hi there,

does somebody has experience with Map/load prediction table?
I think its a kind of "soft Alpha N" for speed desinty?!

How to figure out the values, especially in low rpm?
As example:
Engine idling @1000rpm. Do a short rev up -with 50% tps an take a look at the Map how far i goes. Lets say 80Kpa @2000rpm is the highest MAP i see in the log. Then fill in the tabel 1000rpm/50% tps 80.0KPa map?

Or driving in high gear doing hold TPS 50% and take the acutal map lets say a second later?
VW Scirocco MK2 , MS3 V.3.57 with MS3x . Fully Seq. :yeah!:
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