HPFP AMS in CLA 45 AMG Tune help

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javigsi

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	HPFP AMS in CLA 45 AMG Tune help « on: August 17, 2021, 12:16:28 AM »

hi guys !I am tune the ecu of a MB CLA 45 AMG from a customer who has bought an AMS HPFP and we are not getting it to work properly. I can't get adequate fuel pressure. Could you help me ? .

thanks in advance


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prj

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	Re: HPFP AMS in CLA 45 AMG Tune help « Reply #1 on: August 17, 2021, 03:00:07 AM »

How about some logs?

Use my logger, if you don't already have something:
https://docs.vehical.net/logger_getting_started


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javigsi

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	Re: HPFP AMS in CLA 45 AMG Tune help « Reply #2 on: August 17, 2021, 04:08:13 AM »

ok . later posted logs , but in idle pressure / set point is 10bar / actual 0.8bar .


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prj

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	Re: HPFP AMS in CLA 45 AMG Tune help « Reply #3 on: August 17, 2021, 04:26:34 AM »

That's most likely not a problem with control, but a hardware problem, if it does that with a stock file.


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javigsi

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	Re: HPFP AMS in CLA 45 AMG Tune help « Reply #4 on: August 17, 2021, 04:31:35 AM »

That's what I was thinking, at least it should reach 10 bar, right? I'm going to check our installation


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prj

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	Re: HPFP AMS in CLA 45 AMG Tune help « Reply #5 on: August 17, 2021, 04:54:24 AM »

Yes, I think so. Usually with a HPFP upgrade it will always produce more pressure not less, but at idle even if you do not change anything it should make target.
Check that the low fuel pressure is correct as well.


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teobolo

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	Re: HPFP AMS in CLA 45 AMG Tune help « Reply #6 on: August 24, 2021, 08:07:58 AM »

Hi, it needs completely new calibration of hpfp and lot maps need to be changed otherwise it not work .2 year ago i use it in a hi hp A45 AMG and AMS charge 200usd for sent as calibration for it .


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