M42 Engine management maps and info

Author Topic: M42 Engine management maps and info  (Read 27368 times)

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« on: December 15, 2006, 07:03:11 AM »
Alright,
since this is real easy, everybody has the same engine,
probably running similar sensor configs and so on,
This should make for good info for others wanting to go for standalones,

Also if anybody has the original maps they should of course be uploaded,

I´ll go first with my ign map,



How this works is ..............
The values in the ign maps (tps vs. rpm) are coupled together with the values in the amp (map sensor) table (wich in this case is in 0.15bar - 1.1bar absolute)

Example
RPM 2500 , throttle 31% , value is 32 , this will be 32 at 1bar pressure but will be 41 at 0.5bar pressure (32 + 9 = 41), I´m not using the iat yet but it´s the same there, you can take out or add ignition based on pressure and air temp

Those numbers probably don´t look anything like a MAF map, MAP map, TPS map, as it´s all relative to the system, but they do give an idea as what they should be, you obviously can´t be at 25% throttle with 1bar absolute ,
and so and so.

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #1 on: December 15, 2006, 07:32:34 AM »
Also in that picture the throttle range from 22% to 77% is the range from 0-5v my TPS puts out, i.e 1.1v-3.85v is the range my TPS works in, so there is no
misunderstanding.

tim_s

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 455
    • View Profile
M42 Engine management maps and info
« Reply #2 on: December 15, 2006, 01:01:54 PM »
ok, i don't have the computer on me that has my maps on it, mine are 12x12 and MAF based though. you not getting pinking on load at under 2k rpm?

2.1 200bhp, 175ft/lbs 318is
E46 330ci daily

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #3 on: December 15, 2006, 02:44:09 PM »
no not really , but the pinging does come above 2000rpm but I haven´t tried the latest fuel map yet. so it might be gone now

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #4 on: December 20, 2006, 05:18:42 AM »
I don´t see anybody posting anything in here ;)

Let´s go !!

Frankie

  • Full Member
  • ***
  • Thank You
  • -Receive: 0
  • Posts: 165
    • View Profile
M42 Engine management maps and info
« Reply #5 on: January 07, 2007, 01:23:10 PM »
Well, lets start with stupid questions (I don't know any others) by asking that what programs and cables are you using to extract those values from the EMS?

Please, could you elaborate little bit about your first post regarding the explanation of readings in the tables? I did not understand jack shit.

I really would like to learn to tune the engine management system by myself, but I don't no where to start...

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #6 on: January 07, 2007, 01:33:36 PM »
It´s not from the original motronic,
it´s from my standalone system,

reading those values can only help if you have a similar system or can calculate them over to whatever system you´d be running

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #7 on: January 18, 2007, 03:10:49 PM »
Guys!
I can´t be the only one thats posted anything yet.
I need to see what you guys are using to compare,

jajou318

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 338
    • View Profile
M42 Engine management maps and info
« Reply #8 on: January 18, 2007, 03:52:51 PM »
Quote from: Gunni;17808
Guys!
I can´t be the only one thats posted anything yet.
I need to see what you guys are using to compare,

Honestly, if i knew anything about this i'd post, but i don't so i'm gonna walk away.
somewhat of a teaser...

bar73k

  • Jr. Member
  • **
  • Thank You
  • -Receive: 0
  • Posts: 86
    • View Profile
M42 Engine management maps and info
« Reply #9 on: January 30, 2007, 06:11:54 AM »
This is the best image of the ignition map i could get.



Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #10 on: January 30, 2007, 06:30:15 AM »
is 107% load 20psi?
what is the load measuring device, map , afm , tps, or what

///Motorsport

  • Guest
M42 Engine management maps and info
« Reply #11 on: January 31, 2007, 08:25:00 PM »
This thread confuses me, but I will still keep checking on it, as very recently I had the urge to turbo my car and will need some sort of EM.
Maybe some basic walk-throughs of what equipment you have and runthrough of procedures? Or just links.

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #12 on: February 01, 2007, 03:24:27 AM »
What is confusing to you?
I wouldn´t be considering turboing unless you are ready for all the cost.
Also you might very well consider having a local or semi local tune shop do the engine management for it as well,

bar73k

  • Jr. Member
  • **
  • Thank You
  • -Receive: 0
  • Posts: 86
    • View Profile
M42 Engine management maps and info
« Reply #13 on: February 08, 2007, 06:20:41 AM »
Quote from: Gunni;18446
is 107% load 20psi?
what is the load measuring device, map , afm , tps, or what


the load is Throttle Position 107% is WOT

Gunni

  • Sr. Member
  • ****
  • Thank You
  • -Receive: 0
  • Posts: 277
    • View Profile
M42 Engine management maps and info
« Reply #14 on: February 08, 2007, 08:18:51 AM »
there must be a another map that has something to do with manifold pressure?
as you can have 0-20psi at WOT