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2010 2011 BMW 5 Series Forum F10 N55 PWG tune out throttle closures |
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08-31-2023, 08:50 AM | #1 |
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N55 PWG tune out throttle closures
I'm trying to tune out a throttle closure I get in the lower rpm caused by overboost. Reading through a lot of forums and topics, most say that it's done using the "Compressor characteristic with required compressor / turbine power" (KF_ATL_PVERD). I've tried lowering the values in the given region by 15% but it's like it has no effect. My questions is , is this the correct map or do I have to modify some other map, maybe "Wastegate Position - für Vorsteuerung" (KF_WGPOS_VST) or "Wastegate Position - Modell" (KF_WGPOS). If it's possible I'd like to have no throttle closures at wot, hope some one can help. Here is a log of 4-th gear.
https://datazap.me/u/joretogt/535ix-...1-971&mark=844 |
08-31-2023, 10:00 AM | #2 |
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Every PWG N55 I've ever seen has this problem, and I'm not sure it's ever been figured out. N54 has PWGs of course and holds boost just fine. I hope you can figure it out.
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08-31-2023, 05:50 PM | #3 |
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Mine is a ewg car and do this, thanks for bringing this up its annoying i hate it. Only in reg drive mode tho.
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09-18-2023, 01:48 AM | #4 |
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So a little feedback. I've managed to eliminate the throttle closures by modifing the "Compressor characteristic with required compressor / turbine power" (KF_ATL_PVERD), this is the base WGDC table, I also modified the "Wastegate Position - für Vorsteuerung" (KF_WGPOS_VST), this table is the distribution of how much exhaust gas goes through the WG in % (modified it to also hold a bit more boost up top). The last table I changed was the "WGDC-D factor" (KF_PATLR_D) , changed it back to stock. In the modified file (by the tuner) the values where lowered to much which lead to slight overboost.
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02-03-2024, 12:38 PM | #5 |
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Drives: 2012 BMW 535i xDrive
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Location: Ellsworth AFB, SD
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Update on this issue? I’m over boosting at redline by 2-3 lbs.
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