P1388 MED 9.1 A4 B7 TFSI 2006 only on mod file

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BetePaille

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	P1388 MED 9.1 A4 B7 TFSI 2006 only on mod file « on: October 29, 2025, 12:39:58 PM »

Hi,
.zip attached with modded bin, ori and mappack.
I'm getting P1388-000 or 001 on VCDS, but only when dead cold and after approx 1 minute of running. No issue for the rest of the day after EPC light is reset. No issue on stock file so map related.
Is checksum OK on mod file ? Corrected by MPPS V18 clone.
Is something wrong with tuned kfmirl/iop ?

Car has autotech HPFP, RS4 PRV 136 bars, decat and running E85 hence KRKATE +33%
I'm also getting fuel cut at 5000 rpm with 25% STFT and throttle closure (new lpfp and no fuel issue)
Thanks.


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BetePaille

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	Re: P1388 MED 9.1 A4 B7 TFSI 2006 only on mod file « Reply #1 on: October 30, 2025, 11:58:35 AM »

I'm starting to think that maybe I didn't defined some rail pressure limiter right. Car is still requesting 110 bars max (prnl1 or pgbdvhdo)

Any input ?


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BetePaille

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	Re: P1388 MED 9.1 A4 B7 TFSI 2006 only on mod file « Reply #2 on: October 31, 2025, 11:13:56 AM »

No EPC light nor p1388 today with PRNL1 and pgbdvhdo set back to stock. Are they some med 9.1 software that don't have these at all ?


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tunerga

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	Re: P1388 MED 9.1 A4 B7 TFSI 2006 only on mod file « Reply #3 on: November 03, 2025, 04:25:16 AM »

Quote from: BetePaille on October 29, 2025, 12:39:58 PM

Car has autotech HPFP, RS4 PRV 136 bars, decat and running E85 hence KRKATE +33%
I'm also getting fuel cut at 5000 rpm with 25% STFT and throttle closure (new lpfp and no fuel issue)
Thanks.

It is possible that this will be a problem with the lack of rescaling of the HPFP maps, if the Autotech pump is larger, try to improve the RQUAHDPK/SKHDPMX/VHDP maps


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BetePaille

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	Re: P1388 MED 9.1 A4 B7 TFSI 2006 only on mod file « Reply #4 on: November 03, 2025, 12:43:23 PM »

Rescaling of those maps is done. Got PRNL1 and PGDVBHDO to stock values and now i don't have the issue, and requested rail goes to 130 bars. Seems like my A4 BGB don't need more mods. Maxing inj window @12ms so, i'll have to swap S3 injectors in


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