|
Title: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 04, 2026, 06:16:34 AM Hello Good people of this very helpful Forum.
I’m starting a DIY project to tune my own car, an A4 B7 2.0TFSI Quattro Tiptronic BWT engine, with forged internal, big turbo, upgraded HPFP, LPFP, S4 fuel pressure, and S3 Injectors. I have been at it for about a month and have settled on the current tune and the drivability is acceptable. I haven’t done any logs yet, as I’m still trying to fine tune before I go blasting, and I only have access to VCDs which I understand is limited. So I’m just seeking your opinion on the current maps.. The current issue is that I feel a little jerk when car is shifting, and its weak when going uphill part throttle. Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: fknbrkn on January 04, 2026, 07:26:38 AM Quote I haven’t done any logs yet Quote opinion on the current maps this turbocharger should be big af for those values Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 04, 2026, 07:33:31 AM this turbocharger should be big af for those values Its a Chines Custom K04 claiming 450HP, Surprisingly it does deliver these numbers.. for how long though I have no idea..Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: vanrhj on January 05, 2026, 06:12:27 AM Remember: KFMIRL is inverse KFMIOP Wink
Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Dande on January 06, 2026, 01:40:11 AM I hope it's just a joke.
Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 06, 2026, 09:59:56 AM I hope it's just a joke. That bad?? Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Dande on January 06, 2026, 11:49:19 AM It's clear that you don't understand the issue. Setting kfldimx to max everywhere is really a bad idea. You have to proceed gradually and understand what each map does. Everything is on nefmoto. I also spent a long time searching for information here when I was tuning mine. Study it first.
https://aliantauto.com/ecu-remap-guide-med9-1-seat-leon-cupra-2-0tfsi-20v-240hp-stage-2/ This is also good: https://s4wiki.com/wiki/Main_Page It's only for 1.8t, but some things are the same for 2.0 tfsi. Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 06, 2026, 11:56:58 AM It's clear that you don't understand the issue. Setting kfldimx to max everywhere is really a bad idea. You have to proceed gradually and understand what each map does. Everything is on nefmoto. I also spent a long time searching for information here when I was tuning mine. Study it first. Yes this is a good source I'm currently going through it to understand what im doing. https://aliantauto.com/ecu-remap-guide-med9-1-seat-leon-cupra-2-0tfsi-20v-240hp-stage-2/ This is also good: https://s4wiki.com/wiki/Main_Page It's only for 1.8t, but some things are the same for 2.0 tfsi. Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 06, 2026, 12:16:26 PM Remember: KFMIRL is inverse KFMIOP Wink I'm having so much trouble understanding how this works!Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 06, 2026, 01:10:19 PM Remember: KFMIRL is inverse KFMIOP Wink How does this look?Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: vanrhj on January 06, 2026, 11:50:34 PM Below is a good example of the inverse for the two tables.
Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Mike Tries on January 20, 2026, 09:47:48 AM You really need to post logs. I don't think that people will be able to give you precise guidance without seeing the results of what you're putting into your tables. Keep them short--don't log yourself driving around for 20 minutes. Third gear from 3,000 to redline if you can swing it.
Take lots of notes about what you change and why you changed it. You'll forget later. This is a lot to keep in your brain. Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 20, 2026, 10:01:57 AM I have done so much changes since. But my main problem is finding a reliable logging software. VCDs is not that reliable
Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Mike Tries on January 20, 2026, 03:24:33 PM Me7Logger. http://nefariousmotorsports.com/forum/index.php/topic,837.0title,.html
Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Fero on January 20, 2026, 03:35:07 PM Me7Logger. http://nefariousmotorsports.com/forum/index.php/topic,837.0title,.html Works for Med9.1? What cable can I use?Title: Re: MED9.1 - A4 B7 K04 Stage3 Project Post by: Mike Tries on January 21, 2026, 12:24:30 PM Oh, that I do not know. You'll have to read up on it and see. I use an FTDI cable. You know... the blue ones from eBay. But I'm tuning an ME7.5.
|