Speed Density 2.0 (3D VE Tables, Baro) - Page 59 - evolutionm.net



Speed Density 2.0 (3D VE Tables, Baro)

Reply
 
 
 
Thread Tools Search this Thread
Old Mar 16, 2017, 05:35 AM   #871
Evolving Member
iTrader: (1)
 
TrendSetter's Avatar
 
Join Date: Jan 2007
Location: florduh
Posts: 165
Thanks: 0
Thanked 6 Times in 6 Posts

Drives: 03 evo w/mivec & 6mt

Quote:
Originally Posted by mines5 View Post
yes , matching the load is the hard part. You will feel slight hesitation while going from vacuum into boost .
This is not the case with all the roms. 96534706 is different ,so is 905567 .

Can you share your map volts to kpa and kpa to load tables?
im using 8859 and havent experienced any of the jitter or what i would consider hesitation going into boost. it seems to be a little weak on large throttle transitions, but I think thats more to do with the transient fuel tuning than anything.

kpa to load and map volts to load are all 1:1/same on both sides, which is annoying since map to load is far from 1:1 in practice. I use the built in kavlico 5 bar scaling with the aem 5 bar map i have installed. i havent verified its right across all pressure ranges, but it shows 105kpa with engine off and the rest of the values all seem reasonable.
i also added a custom 2 byte map volt logging variable because i wanted to make sure i was logging the correct map variable that was actually used in the table lookup.

side note: changing the maf comp table at 1000hz and up seems to have affected my entire map? that single change seems to have really messed up my tune and ive been having all kinds of issues the past couple days. cruise went from perfect 15.0-15.4 afr to 13.8ish. i have closed loop completely disabled in periphery bits.
Offline
 
Reply With Quote
Old Mar 16, 2017, 08:58 AM   #872
Evolving Member
 
mines5's Avatar
 
Join Date: Oct 2010
Location: Streets of willow
Posts: 431
Thanked 3 Times in 3 Posts

Drives: Evo7, Evo 8 GSR, GT-R

Well, 1:1 for map volts 2 kpa and kpa to load never worked out for me. Since i am tuning with 2150s . Omni 4 bar. anything under 100 kpa is 1:0.8 and above 100 kpa 1:1.1 ....

Currently suffering mechanical issue, full boost is very late. Perhaps a leaking waste gate diaphram or too much back pressure causing the waste gate to open.
Offline
 
Reply With Quote
Old Mar 16, 2017, 01:59 PM   #873
Evolving Member
iTrader: (1)
 
TrendSetter's Avatar
 
Join Date: Jan 2007
Location: florduh
Posts: 165
Thanks: 0
Thanked 6 Times in 6 Posts

Drives: 03 evo w/mivec & 6mt

why do you have your kpa to load like that? what did it accomplish that leaving it 1:1 couldnt?
I have never tuned a maf dsm/evo I have always gone straight to sd.
Offline
 
Reply With Quote
Old Mar 16, 2017, 11:51 PM   #874
Evolving Member
 
mines5's Avatar
 
Join Date: Oct 2010
Location: Streets of willow
Posts: 431
Thanked 3 Times in 3 Posts

Drives: Evo7, Evo 8 GSR, GT-R

Quote:
Originally Posted by TrendSetter View Post
why do you have your kpa to load like that? what did it accomplish that leaving it 1:1 couldnt?
I have never tuned a maf dsm/evo I have always gone straight to sd.
There are alot of ways to tune, i dont want to reduce/increase VE table values drastically instead i choose this method. For e.g with 2150s and 1:1 map volts2kpa my car idles solid at 11.3 AFR. Make it 1:0.8 afrs get better how they should be. In any case, VE table needs to be adjusted.

Alot of people might not agree with this but this worked for me.
Offline
 
Reply With Quote
Old Mar 17, 2017, 04:16 PM   #875
Evolving Member
iTrader: (15)
 
sandman121383's Avatar
 
Join Date: Nov 2009
Location: Pa
Posts: 106
Thanks: 0
Thanked 1 Time in 1 Post

Drives: 2004 Lancer Evolution VIII

anybody getting jitter when your not in boost or vacuum....cruising along around 2700-3k like i said not in boost but just barely on the throttle.

i know there was discussions about injector latency/scaling settings possible the culprit. or could it be maf scaling even though we're on sd i know those scalings still affect tune.
i read the mrfred posts on all that. anyone know if there is a definitive answer or even know the cause. if we know why its doing it maybe we can all put our knowledge together to get it tuned out.

mines5 is right theres alot of different ways to approach tuning. but i'd def look at mechanical stuff 1st before and after making an adjustment in maps just to keep things consistent!
Offline
 
Reply With Quote
Old Mar 17, 2017, 11:49 PM   #876
Evolving Member
 
mines5's Avatar
 
Join Date: Oct 2010
Location: Streets of willow
Posts: 431
Thanked 3 Times in 3 Posts

Drives: Evo7, Evo 8 GSR, GT-R

Quote:
Originally Posted by sandman121383 View Post
anybody getting jitter when your not in boost or vacuum....cruising along around 2700-3k like i said not in boost but just barely on the throttle.

i know there was s about injector latency/scaling settings possible the culprit. or could it be maf scaling even though we're on sd i know those scalings still affect tune.
i read the mrfred posts on all that. anyone know if there is a definitive answer or even know the cause. if we know why its doing it maybe we can all put our knowledge together to get it tuned out.

mines5 is right theres alot of different ways to approach tuning. but i'd def look at mechanical stuff 1st before and after making an adjustment in maps just to keep things consistent!
Yes Sandman, i have tuned 3 different SD roms with different injector combo and all of them had that jitter. In 9653 you feel it the most.

Please read , Last page , post 227 and onwards.
Evo IX 2.3 Liter Build FP Black Build

Same Sd jitter issue as we all are experiencing. This solution was also discussed and implemented in one of Mfred's thread.
Offline
 
Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
How To: Speed Density on the evo8 using tephra v7/Phenem pre-patched roms scheides EcuFlash 338 Mar 9, 2017 06:27 AM
Links to jcsbanks' Speed Density patches mrfred EcuFlash 375 Jan 28, 2017 09:58 PM
Speed Density IPW Drop Out on 96530006 Patch 03whitegsr EcuFlash 110 Jan 25, 2017 01:00 PM
Going back to 94170015 Appauldd EcuFlash 230 Apr 13, 2011 01:37 PM
AFR Calculator 3SgteGuru EcuFlash 17 Sep 1, 2010 10:54 AM


Tags
3d, 4bar, baro, chart, density, ecu, evo, gm, kpa, map, minimum, needed, speed, tables, values

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -7. The time now is 03:12 AM.


 
  • Ask a Question
    Get answers from community experts
What's your question?
Send