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professor
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« on: June 26, 2013, 07:49:22 AM »
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Has anyone calibrated these injectors?  KRKTE: 0.075 TVUB: 2,1203 1,3335 0,9254 0,6748 0,4907 (using 3 bar fpr) fkkvs,kflf, kfkhfm lets say stock or ones prior fine tuning. Do i miss something or looks ok? |
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
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professor
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« Reply #1 on: June 27, 2013, 01:36:29 AM »
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BUMP  |
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
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prj
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« Reply #2 on: June 27, 2013, 02:22:20 PM »
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They are not linear, fkkvs will need a lot of work.
Flow for me has been 450cc at 3 bar.
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professor
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« Reply #3 on: June 28, 2013, 01:22:50 AM »
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They are not linear, fkkvs will need a lot of work.
Flow for me has been 450cc at 3 bar.
Ok prj i will focus on that. Thanks. |
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
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TCSTigersClaw
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« Reply #4 on: July 03, 2013, 04:07:07 AM »
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noob question ,but if FKKVS is correctly tuned ,why whould KFKHFM needs to be corrected if we have no changes in MAF ?
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prj
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« Reply #5 on: July 03, 2013, 11:17:16 PM »
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noob question ,but if FKKVS is correctly tuned ,why whould KFKHFM needs to be corrected if we have no changes in MAF ?
KFKHFM is for tuning the MAF. If you change the intake for example and the airflow readings go off. |
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TCSTigersClaw
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« Reply #6 on: July 07, 2013, 03:53:12 AM »
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Yes I understand and I know that. I am asking because the OP mentioned about tuning KFKHFM to an injection rescaling thread so I thought I was missing somethinf |
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VAG cars newbie tuner |
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professor
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« Reply #7 on: July 12, 2013, 01:25:07 AM »
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Back again.
Trimming FKKVS a lot, krkte and tvub (12 & 14v) manage to get ltfts/stfts close to -2.
But i see weird behavior on idle.
B_tabgbts is always active although the trigger is over 700°c.
FRM_W close to 1 with 1-2% variations, but on idle goes to~0.92 and lambda readings on Vcds are -15 to -20. Maf goes from 2.5-5.5gr/s and 680-880rpms and ofc ignition retard.
Wot and cruising all fine.
Cant say for leaks atm, although it mirrors such issue.
From SW perspective where do i look now?
temin stock. Kfkhfm stock with 0.93 on idling rpms.
Was thinking to lower tvub 12v value perhaps kflf or kfkhfm too.
Your suggestions pls.
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
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prj
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« Reply #8 on: July 12, 2013, 02:50:03 AM »
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You should not touch kflf nor kfkhfm for injectors ever.
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IamwhoIam
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« Reply #9 on: July 12, 2013, 04:57:53 AM »
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You should not touch kflf nor kfkhfm for injectors ever.
What would kflf be used for in this case? |
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I have no logs because I have a boost gauge (makes things easier)
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prj
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« Reply #10 on: July 12, 2013, 05:20:57 AM »
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What would kflf be used for in this case? IMO KFLF is just a relic left over from old times. It has no use in ME7. FB ESGRU 23.30 Funktionsbeschreibung
Das Kennfeld KFLF sollte nicht zu Gemischeingriffen verwendet werden, da ¨uber das Pulsationskennfeld KFPU die relative
F¨ullung rl dem Motorbedarf anzugleichen ist. |
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« Last Edit: July 12, 2013, 05:23:17 AM by prj »
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IamwhoIam
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« Reply #11 on: July 12, 2013, 08:14:49 AM »
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IMO KFLF is just a relic left over from old times. It has no use in ME7.
Ever looked at KFLF in RS4 K-box? |
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I have no logs because I have a boost gauge (makes things easier)
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prj
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« Reply #12 on: July 12, 2013, 08:59:47 AM »
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Ever looked at KFLF in RS4 K-box?
Have you ever looked at KFKHFM on RS4 K-box? There are plenty of examples where KFLF is used in OEM applications. In the end the ECU is just a calculator, garbage in, garbage out. Does not change the fact that it is a relic from old times when the ECU did not have a strong concept of fuel request - only correction maps. |
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professor
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« Reply #14 on: July 12, 2013, 11:47:35 AM »
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I see. Was sceptical of touching those maps for injector calibration, but this issue is bizzare and was looking for bizzare solution.
On the other side, touching only krkte and tvub gave me paranormal fuel trims but stable idle.
Touching the FKKVS as was looking for +2 - -2% fuel trims, and now i ve got this idle issue only.
Perhaps the TVUB is bit high (0.94 12v - 0.75 14v) or air leak are what i can think atm.
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Seat Ibiza MK4 Cupra 1.8t 20V, stg3.
"Those 1.8T 20V machines are really tough" ©
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