New boost control XDF tables
- Thread starter carabuser
- Start date
I have replaced both table values with 1s and I target 170 load all accross.
I was expecting a flat boost target line to be honest. I am confused.
I have replaced both table values with 1s and I target 170 load all accross.
I was expecting a flat boost target line to be honest. I am confused.
I can´t help you. But this is my boost target with these tables.
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I have replaced both table values with 1s and I target 170 load all accross.
I was expecting a flat boost target line to be honest. I am confused.
You also have tables like the boost limit multiplier and boost request offset % that influence the target.
These are the values I am running and my boost target still isn't what I expect it to be. I8A0S rom
The boost request offset is what's causing that. It references the LSA of the VANOS. If you lower it then you'll see the boost target increase.
Changing that table effects other things so don't go crazy. The beauty of the tables I posted here are they sit at the end of the boost target calculation so don't effect anything else. You can set them below 1 if you want to increase the boost target over any limits.
Changing that table effects other things so don't go crazy. The beauty of the tables I posted here are they sit at the end of the boost target calculation so don't effect anything else. You can set them below 1 if you want to increase the boost target over any limits.
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The dynamic table I think is related to overboost so may not even be active for you. You probably want to be making changes to the "normal" table.
These are the values I currently use, I rescaled the axis to focus more on the top end:
I've fixed the boost ceiling issue now so I have my load target set at around 220 which has my boost target sitting around 21PSI and I use this table to taper the boost target down at higher revs.
The main benefit of this table was that it would allow DCT cars to be able to target 18.6 PSI rather than being stuck at 17.8 PSI but since fixing the ceiling issue it's only real use is for tapering the boost. It works much better than tapering the load target in my experience as the change in target is instant after the shift rather than filtered.
These are the values I currently use, I rescaled the axis to focus more on the top end:
I've fixed the boost ceiling issue now so I have my load target set at around 220 which has my boost target sitting around 21PSI and I use this table to taper the boost target down at higher revs.
The main benefit of this table was that it would allow DCT cars to be able to target 18.6 PSI rather than being stuck at 17.8 PSI but since fixing the ceiling issue it's only real use is for tapering the boost. It works much better than tapering the load target in my experience as the change in target is instant after the shift rather than filtered.
I have kept my normal and dynamic tables the same, to avoid any issues, but I was surprised how the whole rpm range was influenced and not only the higher rpm part. I will do more experimenting with it, and I will also try your values with the same load target I was running previously.
Do you happen to have an xdf for I8A0S where I could rescale the axis?
By fixing you mean for you exclusively? Or has the fix been implemented for everybody?
That would be awesome if it is or will be available to everyone!!
