Pages: 1 ... 18 19 [20] 21 22 ... 31
Author Topic: Opinions: using KFLBTS vs LAMFA for fuel all the time?  (Read 385196 times)
s5fourdoor
Hero Member
*****

Karma: +33/-3
Offline Offline

Posts: 617


« Reply #285 on: March 11, 2012, 12:30:37 PM »

OK, great work.  Here's the map pack with the most recent torque maps, dynamic KR fueling, and nls/als + misc code-words discussed in recent months.  [obviously an assembly modified bin is required to have the nls/als]  [old news]

Logged
nyet
Administrator
Hero Member
*****

Karma: +607/-168
Offline Offline

Posts: 12268


WWW
« Reply #286 on: March 31, 2012, 11:08:36 AM »

Updated wiki to reflect KR and LAMFA based fueling

http://s4wiki.com/wiki/Tuning#Open_loop_AFR

comments welcome!
Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
nyet
Administrator
Hero Member
*****

Karma: +607/-168
Offline Offline

Posts: 12268


WWW
« Reply #287 on: March 31, 2012, 11:36:55 AM »

lamfawkr_w = 1-(1 - (KFLAMKRL + DLAMTANS) * KFLAMKR)

Ok, thats retarded.

Using my basic algebra I skills,

1-(1-x) =  x

So isn't this equivalent to

(KFLAMKRL+DLAMTANS) * KFLAMKR?

[edited to fix stupid algebra error Smiley]
« Last Edit: March 31, 2012, 01:51:29 PM by nyet » Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
phila_dot
Hero Member
*****

Karma: +173/-11
Offline Offline

Posts: 1709


« Reply #288 on: March 31, 2012, 12:55:52 PM »

Ok, thats retarded.

Using my basic algebra I skills,

1-(1-x) = 1 + x

So isn't this equivalent to

1 + (KFLAMKRL+DLAMTANS) * KFLAMKR

There's obviously a sign missing some place, because aren't both KFLAMKRL and KFLAMKR positive?

Given ...
KFLAMKRL = 11.7
DLAMTANS = 0
KFLAMKR   = 1

1 - (1- ((11.7 + 0) * 1))

1 - (1 - 11.7)

1 -  (-10.7)

11.7
Logged
nyet
Administrator
Hero Member
*****

Karma: +607/-168
Offline Offline

Posts: 12268


WWW
« Reply #289 on: March 31, 2012, 01:33:52 PM »

that makes no sense Sad KFLAMKRL is in delta lambda not delta AFR
Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
phila_dot
Hero Member
*****

Karma: +173/-11
Offline Offline

Posts: 1709


« Reply #290 on: March 31, 2012, 01:42:44 PM »

that makes no sense Sad KFLAMKRL is in delta lambda not delta AFR

Ok... plug in .85

1 - (( 1 - ( .85 + 0 )) * 1)

1 - ( .15 )

.85

Adding DLAMTANS makes it more clear

1 - (( 1 - ( .85 + -.03 )) * 1 )

1 - (( 1 - .82 ) * 1 )

1 - ( .18 * 1 )

1 - ( .18 )

.82

Edit : The correct formula is 1 - (( 1 - (KFLAMKRL + DLAMTANS)) * KFLAMKR), so if you choose to offset for IAT then DLAMTANS needs to be negative.
« Last Edit: April 01, 2012, 12:43:25 AM by phila_dot » Logged
nyet
Administrator
Hero Member
*****

Karma: +607/-168
Offline Offline

Posts: 12268


WWW
« Reply #291 on: March 31, 2012, 01:49:34 PM »

Oh, i'm stupid

1-(1-x) is x lol.

Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
jibberjive
Hero Member
*****

Karma: +23/-2
Offline Offline

Posts: 536


« Reply #292 on: March 31, 2012, 03:31:19 PM »

LAMFAWKR, did anyone else find this variable funny?
Logged
julex
Hero Member
*****

Karma: +79/-4
Offline Offline

Posts: 923


« Reply #293 on: April 02, 2012, 01:35:09 PM »

Inevitable happened today. After getting a tank of 93 octane fuel I proceed to floor it on the highway and all of the sudden I dip to 10.3:1 AFR during all out WOT... that's with meth squirting...

On a normal car it wouldn't be anything alarming unless of course this would be a result of bad misfires, but on my car it is indicative of severe KR fueling intervention. I quickly logged the car and I clock -8.5 corrections which is what I would normally get if I run out of meth on 93, but meth is squirting as verified by running pump on manual and the fact that the level dropped during next run.

This only means that either I dozed off and pumped 87 octane or something, not likely, or the assholes at gas station are cheating badly on fuel.

Conclusion is that if I had fixed BTS fueling I would had much heavier corrections at a target AFR with possibility of maxxing them out altogether and pinging he engine..



Logged
phila_dot
Hero Member
*****

Karma: +173/-11
Offline Offline

Posts: 1709


« Reply #294 on: April 02, 2012, 01:50:33 PM »

Conclusion is that if I had fixed BTS fueling I would had much heavier corrections at a target AFR with possibility of maxxing them out altogether and pinging he engine..

Can you clarify the above statement? I don't understand what you mean by "fixed" BTS.

Scary shit though...
Logged
julex
Hero Member
*****

Karma: +79/-4
Offline Offline

Posts: 923


« Reply #295 on: April 02, 2012, 01:55:28 PM »

KR enrichens more and more the higher correction factors are used.
BTS is effectively fixed in that respect. You'll run the same AFR regardless of knock.
Logged
phila_dot
Hero Member
*****

Karma: +173/-11
Offline Offline

Posts: 1709


« Reply #296 on: April 02, 2012, 02:39:37 PM »

KR enrichens more and more the higher correction factors are used.

Personally, I don't enrich via KFLAMKRL beyond my zero row until ~-8 because of DZWWL's influence. On a typical pull, DZWWL will offset dzlamfaw by -1.5 to -3.

BTS is effectively fixed in that respect. You'll run the same AFR regardless of knock.

Only true if you have disabled LAMBTSZW via DLBTS and KFFDLBTS.
Logged
nyet
Administrator
Hero Member
*****

Karma: +607/-168
Offline Offline

Posts: 12268


WWW
« Reply #297 on: April 02, 2012, 02:52:54 PM »

Personally, I don't enrich via KFLAMKRL beyond my zero row until ~-8 because of DZWWL's influence. On a typical pull, DZWWL will offset dzlamfaw by -1.5 to -3.

I thought dzwwl typically offets dzlamfaw the OTHER direction (hence setting CWLAMFAW bit 0 to 0)
Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
phila_dot
Hero Member
*****

Karma: +173/-11
Offline Offline

Posts: 1709


« Reply #298 on: April 02, 2012, 03:07:30 PM »

I thought dzwwl typically offets dzlamfaw the OTHER direction (hence setting CWLAMFAW bit 0 to 0)

If load is greater than ~60 and IAT is greater than ~39* c, DZWWL will be negative.

http://nefariousmotorsports.com/forum/index.php?topic=141.msg15921#msg15921
« Last Edit: April 02, 2012, 03:09:03 PM by phila_dot » Logged
nyet
Administrator
Hero Member
*****

Karma: +607/-168
Offline Offline

Posts: 12268


WWW
« Reply #299 on: April 02, 2012, 05:36:14 PM »

Any suggestions for wording describing that for the s4wiki?
Logged

ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please do not ask me for tunes. I'm here to help people make their own.

Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
Pages: 1 ... 18 19 [20] 21 22 ... 31
  Print  
 
Jump to:  

Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Page created in 0.024 seconds with 17 queries. (Pretty URLs adds 0s, 0q)