1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar

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Topic: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar (Read 1909 times)

Fabioo

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	1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « on: October 23, 2023, 10:47:04 AM »

Hello, i am trying to convert A4 B6 1.8T AVJ from Returnless 4BAR to FPR Regulated 4BAR.
Found out that i have to change in software those variables:
- CWPKAPP from 0 to 1.
- FRLFSDP everything in map should be 1

Measured fuel pressure and on idle it is 3.5bar and with boost something around 5.2bar+-
At idle the car is going +10 STFTs and when i am part throttle it is somewhere from -5 to +5 but at WOT it is -20 and even -25 so it still calculates like it is not with FPR.

Maps:
CWPKAPP = 0x18ED4
FRLSFDP = 0x1D712

SW: 354008
HW: 0261206869

Any help appreciated


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BlackT

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	Re: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « Reply #1 on: October 23, 2023, 12:31:05 PM »

Logs?


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Fabioo

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	Re: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « Reply #2 on: October 23, 2023, 12:52:00 PM »

Have one from yesterday


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iLimitless

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	Re: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « Reply #3 on: October 23, 2023, 02:09:17 PM »

FRLFSDP 0x1D72A 11x1 16bit LoHI - Fuel supply @ dpus (ambient-manifold press.)
right after FKKVS map

According to my definitcion CWPKAPP 0x18ED5 1x1 8bit - Application code word for pressure reference fuel pressure regulator in your BIN file this map is set to 1 but in my file is 0.

Now i`m bit confused which map definition is wrnog here?

BTW if you post your BIN file it`s will be very helpfull to add maps definiction as well.


« Last Edit: October 23, 2023, 02:27:39 PM by iLimitless »	Logged

Fabioo

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	Re: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « Reply #4 on: October 24, 2023, 02:26:05 AM »

Quote from: iLimitless on October 23, 2023, 02:09:17 PM

File is in 1 post it is from the car but original, actually car has 300hp tuned file so the maps were wrong?


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Fabioo

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	Re: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « Reply #5 on: October 29, 2023, 06:48:20 AM »

I Can't figure out X-Axis why it is so random in
0x1D72A Einspritzkorrektur bei RLFS

also the CWPKAPP is 0 in my current tuned file.
here screenshot anyone idea how to modify AXIS for FPR ?


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IamwhoIam

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	Re: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « Reply #6 on: October 29, 2023, 06:56:14 AM »

axis data for FRLFSDP is at 1D714, factor 0.3125 offset 0 and SIGNED values, not sure how you defined it in your map.


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I have no logs because I have a boost gauge (makes things easier)

Fabioo

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	Re: 1.8T AVJ Conversion Returnless fuel 4bar to FPR 4bar « Reply #7 on: October 29, 2023, 11:11:00 AM »

Thank You, the map looks Correct now, Any further tips what should i do before i test anything in the car ?

This screenshot is from the TuneFile friend is driving right now with unplugged(intake signal) 4bar FPR.

-EDIT-
Found damos from VW Passat 1.8T AWT engine which also have 4BAR FPR and copied maps so i end up with this:
CWPKAPP = 0
FRLFSDP = Whole map 1.00000


« Last Edit: October 29, 2023, 02:26:30 PM by Fabioo »	Logged

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