Boost controlled by KFLDHBN? Me 7.5

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miraimihai15

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	Boost controlled by KFLDHBN? Me 7.5 « on: July 22, 2024, 01:18:08 PM »

Hello, I have understand its possible to control the boost pressure only via KFLDHBN and not by LDRXN on 1.8t me7.5

How can I do that? I need to rase the LDRXN?

Thanks


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davidklmn

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	Re: Boost controlled by KFLDHBN? Me 7.5 « Reply #1 on: July 22, 2024, 01:53:14 PM »

As far as I've understood by reading the FR ("Funktionsrahmen") to increase boost pressure, you have to request more load via KFMIRL and KFMIOP and increase LDRXN to allow higher cylinder charge, but I'm not 100% sure tbh.


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nyet

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	Re: Boost controlled by KFLDHBN? Me 7.5 « Reply #2 on: July 22, 2024, 02:07:40 PM »

Quote from: miraimihai15 on July 22, 2024, 01:18:08 PM

Hello, I have understand its possible to control the boost pressure only via KFLDHBN and not by LDRXN on 1.8t me7.5

How can I do that? I need to rase the LDRXN?

Thanks

Yes, you can use either to limit boost pressure.

By and large, for consistent torque, limiting via LDRXN is usually more common, since limiting via HBN will give inconsistent results depending on conditions (e.g. altitude).


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