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Author Topic: Lean burn coding  (Read 8076 times)
turdburglar44
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« on: December 30, 2014, 09:25:47 PM »

I've been running circles in IDA trying to figure out what all exactly goes into deciding rich and Lean limits for lamsbg_w and have found a few things that I think may be useful. Mainly a codeword that seems to rule out a lot of "diagnosis" lambdas. I've gotten to a point where a very minimal amount of coding may have me on my way to a lean burning machine. I'm going to post the bin and xdf I have Because I am not familiar enough with the FR to properly name these things. would anyone be willing to shed some light or help me figure this dilemma out? The Maps and scalars in question are in the experimental category.
« Last Edit: December 30, 2014, 09:49:55 PM by turdburglar44 » Logged

Tuning is the easy part...
TijnCU
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flying brick


« Reply #1 on: December 31, 2014, 03:27:58 AM »

In my 225 damos I have seen LAMLGMTM (laufgrenze mager), which seems like an maximum allowable lambda for leanest condition. 018AE bin @ 18A1A 12x1
« Last Edit: December 31, 2014, 03:29:41 AM by TijnCU » Logged

4ringpieces
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« Reply #2 on: December 31, 2014, 08:50:13 AM »

I'm sure I've seen in the cb damos, upper and lower lamda limits 1x1 map. Can't tell you what folder it was in as I was translating the folders and had quick glimpses in the maps at time to break it up a little
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elRey
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« Reply #3 on: January 02, 2015, 05:38:15 PM »

There is a hard coded value of lambda 1.

http://nefariousmotorsports.com/forum/index.php?topic=1544.msg16688#msg16688
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dream3R
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« Reply #4 on: January 04, 2015, 08:18:51 AM »

There certainly is!
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How to work out values from an A2L Smiley

http://nefariousmotorsports.com/forum/index.php?topic=5525.msg52371#msg52371


Starting Rev's http://nefariousmotorsports.com/forum/index.php?topic=5397.msg51169#msg51169

noobs read this before asking http://nefariousmotorsports.com/forum/index.php?topic=9014.0title=


ORGORIGINAL 05 5120 creator for Volvo
ORIGINAL Datalogger (Freeware) Author
ORGINAL finder of the 'extra' torque' limits
I don't have ME7.01 A2L I just use ID
turdburglar44
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« Reply #5 on: January 04, 2015, 11:00:11 AM »

So even if you hijack every mov lamsbg_w. Later on in code it gets set back to 1?
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turdburglar44
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« Reply #6 on: January 06, 2015, 09:28:42 AM »


Did you ever achieve this?
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elRey
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« Reply #7 on: January 06, 2015, 10:14:57 AM »

I did, but found the gas savings was minimal.
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turdburglar44
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« Reply #8 on: January 06, 2015, 10:21:18 AM »

I see. So you ended up setting the mov lamdiag_w to 10C2 and how did you get around the lambas issue?

on my old wrx I leaned out to 16:1 and was getting around 20-22 mpg as compared to the 16-17 mpg at stoich. Are there any ill effects to lean burning? I'm catless so that's no issue but I've heard (with internet ears) things like NOX oxidizing pistons and cylinder walls.

***edit I should probably add in I'm talking e85 and lambdas compared to gas.
« Last Edit: January 06, 2015, 03:14:19 PM by turdburglar44 » Logged

Tuning is the easy part...
turdburglar44
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« Reply #9 on: January 09, 2015, 04:44:38 PM »

I've gotten to the point where Lamsbg_w is requesting 1.1 lambda but I'm still seeing a lambda of 1 on lamzak and lamsoni. At this point I am hunting down all #1000h's with reckless abandon. I've found over 80 that play into the fueling equation somehow.
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