JeromeM
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« on: September 05, 2023, 09:22:25 AM »
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Hello everybody,
I got an issue with a tune on Golf 4 GTI ref 032HJ.
Here car setup:
-Turbo F21
- injector 630cc EV14
- decat
- fuel pump high flow
- ramair air filter
- DV oem
- n75 oem and new
- intake 3"
- SAI, EVAP and n249 off and removed
- Rear 02 removed and off
- all hoses new
- MAF 255 linearized in the tune file
The issues
Car is doing throttle intervention at WOT near 4500/5000 rpm. after this, we have no boost anymore.
Throttle is max at 32%. N75 dc 100%, boost actual follow requested at 0.6 bar (1.3 bar when no intervention).
load fall at 86% instead of 160-180% requested.
I disabled torque monitoring for level 1.
I made some log with vcds and ME7L. All seems good on it but I don't understand this throttle intervention.
At partial load, no problem but only if pedal is < 30%.
Oil vapor system is free and no pluged on the intake like oem.
Same issue
here my logs
tune file only by PM
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BlackT
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« Reply #1 on: September 05, 2023, 11:34:23 AM »
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Fix IRL and IOP map.
Turn back on torque intervention, nobreason to turn it off
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JeromeM
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« Reply #2 on: September 05, 2023, 02:01:37 PM »
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I have tweaked iop and irl to try but no success. Already try to back torque monitoring. No issue with dtc but still have issue.
I disabled them to be more safe
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ratosluaf
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« Reply #3 on: September 05, 2023, 11:11:37 PM »
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log requested boost vs actual boost, throttle plate angle vs accelerator pedal angle. Sounds like an overboost issue when boost is about 0,3b higher than requested.
hbn looks good, capping load at 210. Also would bet fucked irl and iop
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JeromeM
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« Reply #4 on: September 06, 2023, 03:07:03 AM »
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hi !
Here the last mod with torque monitoring disabled.
No dtc and no intervention so IRL / IOP are well tuned.
We can see actual pressure drop.
I see overboost is more than 0.3bar. I will tweak it too get max 0.1 0.15 bar of difference
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JeromeM
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« Reply #5 on: September 06, 2023, 06:54:11 AM »
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I reduce boost with KFLDRL at 0.7bar but same issue. throttle cut at 5000 rpm
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fknbrkn
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mk4 1.8T AUM
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« Reply #6 on: September 06, 2023, 11:42:43 AM »
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I reduce boost with KFLDRL at 0.7bar but same issue. throttle cut at 5000 rpm
Pressure drop below atmospheric Damn just use the logic |
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JeromeM
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« Reply #7 on: September 06, 2023, 12:10:54 PM »
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Okay So what’s about the solution for you ?
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BlackT
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« Reply #8 on: September 06, 2023, 02:11:01 PM »
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Okay So what’s about the solution for you ?
Put camera under hood and see what is happening  Can you breathe when someone shut your mouth? |
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JeromeM
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« Reply #9 on: September 07, 2023, 12:40:40 AM »
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I guess you think the issue is about hardware. I will check and back to tell you if I see something  |
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aef
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« Reply #10 on: September 07, 2023, 04:22:46 AM »
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It would help if you can provide a full log with relevant vars.
There are cases where the intake collapses so the maf reading will stop and it feels like throttle plate closing.
not sure if you have checked this because of the limited logfile you provided.
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« Last Edit: September 07, 2023, 12:33:32 PM by aef »
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JeromeM
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« Reply #11 on: September 07, 2023, 04:46:41 AM »
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I will make anothers logs
Intake is 3" silicon
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JeromeM
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« Reply #12 on: October 27, 2024, 05:35:23 AM »
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Hi, Here some update. Issue was because intake was collaps  now solve |
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