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Author Topic: BTS kicking in through B_tabgbts with EGT of 660  (Read 1423 times)
Blazius
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« Reply #15 on: September 02, 2021, 10:02:39 AM »

Something happen only when back to stock with KFDLBTS and made all 1 for KFFDLBTS.
The fuel desire is ritcher than LAMFA but leaner than KFLBTS.
i atached the log and the modification of fuel desire can see at 100% pedal.



I dont know what you mean but in that log afr follows lambts request except for top end. Also dont forget you are knocking so knock based afr is in play too.
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tao13
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« Reply #16 on: September 02, 2021, 10:22:23 AM »

Thanks Blazius. With a filter on 3rd gear and pedal 100% i see in that log afr follow lambts (KFLBTS with some multuiplications factors) from 4000rpm.
I hopeed with KFDLBTS =0 and KFFDLBTS =0 to obtain the real KFLBTS value in lambts. BUT....i think is not like this. So the formula is wrong KFLBTS+(KFFDLBTS*KFDLBTS)!
Right?
I will decrease more KFLBTS values and will try to have more fuel from lambts, because i want leave lamfa leaner somewhere at top 12.2.
I will write here the results.
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tao13
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« Reply #17 on: September 02, 2021, 11:21:39 AM »

WORST!
With KFLBTS ritcher and FBSTABGTS made from 1.001 to 1.02 .........fuel desire is again LAMFA!
Retards maximum -0.75 at the top.
Some advice about TLAFA = 0! if it is 0 fuel works only on lamfa?
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tao13
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« Reply #18 on: September 04, 2021, 03:50:08 AM »

SOME CONCLUSIONs after 1 week with FBSTABGM 0 for axis lower than TABGBTS and 1 when axis >=TABGBTS.
1.KFFDLBTS and KFDLBTS can be 0 - not affect if LAMBTS is active or not , they only multiply. (log 032HS with both maps 0 , log 018h with KFFDLBTS all 1 and KFDLBTS stock)
2. in 018H(BAM) file something activate lambts sooner or later(see logs 018h_1 , 018h_2) ,i dont understood why and what even if TABGBTS is touched from the start of logs (same load , same b_tabgbts , in 018h_1 is lambts is active when is ritch then lamfa). Maybe here someone give an explanation.
3. TLAFA = 0 looks LAMFA si active all the time and BTS never activate! (must make more tests).
4.CWLAMBTS in 032HS is 4 (works with tabgkrm) and in 018H is 0 (work with tabgbts).
5. in 032HS calculated EGT before cat (who is applied for activate lambts) is much bigger than in 018H , aproximatly with 200 degree. I think the calculation of them is different between files. I compared logs EGT with real one gauge read EGT and looks like 018h(BAM) is near real value +- 30degree.
6. in both situation 032hs and 018H, i don't have retards and i confirm and LAMBTS activated, so LAMBTS not depends by KNOCK!
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totti
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« Reply #19 on: September 14, 2021, 01:16:05 AM »

^ You got it wrong mate, TargetAFRDriverReq=lamfa.



First what is your CWLAMBTS set at? Is tabgm_w or TABGKRM_W is the switching point?
If you dont have cwlambts defined, just log both of these values and you will see which is used as tabgbts_w and you will find your issue likely. If not you will have to look elsewhere.

What is the default value for CWLAMBTS.2? For my HN 0001 is 1 so tabgkrm is used for bts but at other sw-s it is 0. When is the difference? Maybe when egt sensor is places it is 0 other cases 1?
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tao13
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« Reply #20 on: September 14, 2021, 07:39:35 AM »

Yes, different calculation
CWLAMBTS.2 you will have a higher egt calculation!
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totti
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« Reply #21 on: September 14, 2021, 12:04:44 PM »

Yes, different calculation
CWLAMBTS.2 you will have a higher egt calculation!

I know that it is different, just I don't know when tabgm and when tabgkrm is used.
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tao13
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« Reply #22 on: September 14, 2021, 12:06:37 PM »

CWLAMBTS.2 = 0 use tabgm
CWLAMBTS.2 = 1 use tabgkrm
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totti
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« Reply #23 on: September 14, 2021, 03:08:43 PM »

CWLAMBTS.2 = 0 use tabgm
CWLAMBTS.2 = 1 use tabgkrm

Sorry maybe I wrote it wrong. I know how CWLAMBTS works. What I don't know which is the default value in the different SW versions like HN 0001. I can check it but is there any scheme that all of the SW use tabgkrm or this is changing in the different sw-s?
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