Notices
ECU Flash

Has rescaling your load caused the car to bog when the engine is cold?

Thread Tools
 
Search this Thread
 
Old Sep 18, 2009 | 10:05 PM
  #1  
C130flyer's Avatar
Thread Starter
Evolving Member
15 Year Member
Photogenic
iTrader: (8)
 
Joined: Jul 2008
Posts: 464
Likes: 1
From: Elizabeth City, NC
Has rescaling your load caused the car to bog when the engine is cold?

I rescaled my load on my fuel and timing maps. Then I noticed that the car was running like crap when the motor was cold. I was able to fix it by disabling the periphery bit called "ign retard during warm up".

I hope this helps someone. Maybe I am just dumb and everyone knows this, but it eluded me for a week or two.
Reply
Old Sep 19, 2009 | 07:48 PM
  #2  
Appauldd's Avatar
Evolved Member
iTrader: (22)
 
Joined: Nov 2003
Posts: 2,408
Likes: 7
From: Northern KY near Cincy
Where was this periphery located????
Reply
Old Sep 19, 2009 | 07:56 PM
  #3  
C130flyer's Avatar
Thread Starter
Evolving Member
15 Year Member
Photogenic
iTrader: (8)
 
Joined: Jul 2008
Posts: 464
Likes: 1
From: Elizabeth City, NC
FAA 7th one from the top
Reply
Old Sep 19, 2009 | 09:45 PM
  #4  
ace33joe's Avatar
Evolving Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (2)
 
Joined: Mar 2003
Posts: 394
Likes: 7
From: Used to be in Nor Cal, now working in Seoul
If you scaled the load axis by removing 70 and 90 load columns, then you may also need to modify other maps that use the same load scale, such as, EGR ignition advance, and low coolant temp timing trim map.

If only an extra column (such as 280) is needed, what would be the best column to delete?
Reply
Old Sep 19, 2009 | 10:25 PM
  #5  
Raceghost's Avatar
Evolved Member
iTrader: (4)
 
Joined: Dec 2001
Posts: 1,034
Likes: 21
From: Out West
How does one "Scale" the load in the timing and fuel maps?

...I know, I sound like a newb, but one of the many things I have not read anywhere. Most maps I have looked at are always scaled already, so I never have had to do this on my own.

To the OP, thank you for the find. I wonder if this is also similiar to the "Idle Stability TIming Control" that you can add to the timing section of the xml? It seems as though they do similiar things at idle...

And when you mean ran like crap, can you elaborate. I am still chasing a flash flood start... 90% of the time, she fires right up, 10% of the time, she wants to act flooded, and will idle at 250 rpm, and it is only when she is warm, not hot, not cold, warm...she been ran, shut off, and let sit for 20~30 mins, and then trying to start again.
Reply
Old Sep 19, 2009 | 10:57 PM
  #6  
lan_evo_mr9's Avatar
Evolved Member
iTrader: (10)
 
Joined: Feb 2006
Posts: 1,097
Likes: 2
From: MD
you can also disable the P0300 if you'd like.
Reply
Old Sep 19, 2009 | 11:38 PM
  #7  
gear head's Avatar
Evolving Member
iTrader: (3)
 
Joined: Sep 2005
Posts: 333
Likes: 0
From: Utah
How drastic were the load changes in the 0-60 columns?

There's a cold start ignition map that could cause problems if there was a big shift in load scaling. I have only seen this map defined in the 96530006 ROM though.
Reply
Old Sep 19, 2009 | 11:51 PM
  #8  
Evo_Jay's Avatar
Evolved Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (17)
 
Joined: Jun 2005
Posts: 3,419
Likes: 14
From: Chico, CA (NOR-CAL)
I just map a thread about this. here.

https://www.evolutionm.net/forums/ec...-question.html

Also to fix your car from boggin while cold, make sure you correct after rescaling your timing maps.

"low coolant temp timing trim map"

Then your car will run proper.
Reply
Old Sep 20, 2009 | 09:40 AM
  #9  
gear head's Avatar
Evolving Member
iTrader: (3)
 
Joined: Sep 2005
Posts: 333
Likes: 0
From: Utah
This is the table I was talking about...
Attached Thumbnails Has rescaling your load caused the car to bog when the engine is cold?-cold-start.png  
Reply
Old Sep 21, 2009 | 01:01 PM
  #10  
C130flyer's Avatar
Thread Starter
Evolving Member
15 Year Member
Photogenic
iTrader: (8)
 
Joined: Jul 2008
Posts: 464
Likes: 1
From: Elizabeth City, NC
Originally Posted by gear head
This is the table I was talking about...
where is that located I don't have that one.

My rom is fully updated and has tephra V5
Reply
Old Sep 21, 2009 | 01:44 PM
  #11  
97TSiAWD's Avatar
Evolving Member
iTrader: (4)
 
Joined: May 2007
Posts: 327
Likes: 0
From: Plymouth, MI
Originally Posted by C130flyer
where is that located I don't have that one.
In newer EcuFlash versions (I believe 1.3 and newer), it is called the "Low Coolant Temp Timing Trim Map" and it's under the Timing section.
Reply
Old Sep 21, 2009 | 02:37 PM
  #12  
Evo_Jay's Avatar
Evolved Member
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (17)
 
Joined: Jun 2005
Posts: 3,419
Likes: 14
From: Chico, CA (NOR-CAL)
Originally Posted by C130flyer
where is that located I don't have that one.

My rom is fully updated and has tephra V5
Originally Posted by 97TSiAWD
In newer EcuFlash versions (I believe 1.3 and newer), it is called the "Low Coolant Temp Timing Trim Map" and it's under the Timing section.
I said the same thing like 3 post up. lol
Reply
Old Sep 21, 2009 | 06:27 PM
  #13  
gear head's Avatar
Evolving Member
iTrader: (3)
 
Joined: Sep 2005
Posts: 333
Likes: 0
From: Utah
Originally Posted by C130flyer
where is that located I don't have that one.

My rom is fully updated and has tephra V5
Bez found that a long time ago, I came across it on aktive matrix.

Originally Posted by 97TSiAWD
In newer EcuFlash versions (I believe 1.3 and newer), it is called the "Low Coolant Temp Timing Trim Map" and it's under the Timing section.
The map I posted has a different address than the "Low Coolant Temp Timing Trim Map"
Reply
Old Sep 21, 2009 | 07:29 PM
  #14  
whitey4d's Avatar
Evolved Member
iTrader: (1)
 
Joined: Sep 2005
Posts: 751
Likes: 0
From: Harpers Ferry,WV
Im running 94170015 with v1.42 of ecuflash and dont have either of those maps defined. Very interested in them.
Reply
Old Sep 22, 2009 | 04:13 AM
  #15  
Appauldd's Avatar
Evolved Member
iTrader: (22)
 
Joined: Nov 2003
Posts: 2,408
Likes: 7
From: Northern KY near Cincy
Originally Posted by whitey4d
Im running 94170015 with v1.42 of ecuflash and dont have either of those maps defined. Very interested in them.
+1

I'm starting to fight the cold start issues since the days are getting colder. The car goes super lean until it is warm. Then everything is fine.
Reply



All times are GMT -7. The time now is 07:50 AM.