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Author Topic: Opinions: using KFLBTS vs LAMFA for fuel all the time?  (Read 385437 times)
marcellus
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« Reply #375 on: June 05, 2012, 10:31:59 AM »

Quick question as I read through this 20 times already.    On the kflamKR table does it matter which axis has rpm?  Mine is backwards as compared to all the screenshots I have seen.  I have rpm on the y instead of x.  I have input the values in there coresponding cells of x and y location.  Just wondering if the axis being reversed matters.
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automan001
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« Reply #376 on: August 09, 2012, 08:36:41 AM »

I found a very good example how KFLBTS and LAMFA should be used - it's BFV engine (Audi TT Quattro 240PS). I like those rich best torque values at WOT. The way they configured looks better than in BAM engine.
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hipeka
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« Reply #377 on: August 16, 2012, 09:50:49 PM »

Hi

I try to use KFLAMKR and KFLMAKRL based fueling on my 4B0906018CG ecu but during road test i am guite sure that those maps are located wrong on .ols which i am using.

Can somebody please check data and axis locations for those values?

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Bi-turbo
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« Reply #378 on: October 17, 2013, 01:38:11 PM »

If you want to use LAMFA, you need to change the axis.

Rick

How do you go about changing the axis?
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nyet
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« Reply #379 on: October 17, 2013, 01:47:40 PM »

How do you go about changing the axis?

http://s4wiki.com/wiki/Tuning#LAMFAW
http://nefariousmotorsports.com/forum/index.php/topic,141.msg9068.html#msg9068
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Bi-turbo
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« Reply #380 on: October 18, 2013, 01:22:02 AM »

Awesome, spent ages last night reading, that link has shed some light on the matter, thanks  Grin
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TC
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« Reply #381 on: May 20, 2014, 01:54:33 PM »

hi
I dont understand problem with LAMFA axis , I had read this topic and Wiki 1.8 T tuning :/
ori file in attache
x axis is 1D8E6 factor 0.003052 16 bit LoHi 
and I have got on axis  85.01 87.51 90.01 92.51 95.01 97.51
but in Wiki is written :
" the stock LAMFA load axis is (incorrectly) restricted to 0.5%-1.0%"
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ddillenger
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« Reply #382 on: May 20, 2014, 01:56:54 PM »

hi
I dont understand problem with LAMFA axis , I had read this topic and Wiki 1.8 T tuning :/
ori file in attache
x axis is 1D8E6 factor 0.003052 16 bit LoHi 
and I have got on axis  85.01 87.51 90.01 92.51 95.01 97.51
but in Wiki is written :
" the stock LAMFA load axis is (incorrectly) restricted to 0.5%-1.0%"


That's the S4 wiki :O

One of the few things that only applies to the 2.7t.
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nyet
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« Reply #383 on: May 20, 2014, 02:01:45 PM »

fixed, hopefully.
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TC
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« Reply #384 on: May 20, 2014, 03:05:27 PM »

Now I have got it Wink
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terminator
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« Reply #385 on: July 10, 2014, 11:55:33 AM »

I'm trying to understand how does BTS work, but a little confused by 26 pages of the thread  Tongue

lambts = KFLBTS + ([KF]DLBTS * KFFDLBTS)

For example LAMKR is disabled, LAMFA = 1, retardation is 0 CF
I attached BTS maps.

So here are my calculations (rl = 138 on 6000 RPM)?

lambts = 0.9219 + (0 * 0.8672) =  0.9219

for retardation 12 CF:
lambts = 0.9219 + (-0.2813 * 0.8672) = 0.9219 + (-0.2439) = 0.6779

Am I right or totally wrong? I think I'm wrong because it doesnt work for 190 load. Please throw me a bone.
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nyet
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« Reply #386 on: July 10, 2014, 12:08:02 PM »

The input to KFDLBTS is detazwbs, not CF.
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phila_dot
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« Reply #387 on: July 10, 2014, 12:15:19 PM »

The input to KFDLBTS is detazwbs, not CF.

This, it's ignition angle efficiency.

You can have no timing retard and poor ignition angle efficiency.
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terminator
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« Reply #388 on: July 10, 2014, 03:57:03 PM »


Thanks for reply, I'm not sure I fully understand how detazwbs works, but looks like I got it.

So the difference between optimal and actual ignition angle converted to percents(ETAZWG and ETAZWIST) via ETADZW map?

mean etazwist = etazwim

After that:

"The difference between etazwg(Efficiency at basic ignition angle) and etazwim(Mean efficiency at actual ignition angle)
gives the deterioration in the efficiency detazwbs. Depending on detazwbs, an additive
enrichment can now be performed by means of the characteristic DLBTS."

Right?

And I was wrong only with CF?
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nyet
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« Reply #389 on: July 10, 2014, 04:08:00 PM »

Yep. Sounds about right to me.
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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
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