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    Thread: OBD1 motronic tuning thread?

    1. Member VDUBIN's Avatar
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      08-12-2010 09:20 PM #26
      watching... I am currently tuning ms MS system and loving it, but would love to try tuning the OE computer.
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      old turbo setup
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      Keep the hammer down!!!

    2. Member B4S's Avatar
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      08-17-2010 10:08 PM #27
      Got the software, so far it seems quite interesting. It's necessary to input the addresses of each map, but the program deciphers the header on it's own, making axis population a breeze (if you don't have WinOLS). You have to populate the descriptor lookup table, with the characters and the offsets/conversions, as well as sort out the checksum calculation, but it's fairly simple with the early motronics. There is no need to program in the size of the x-y axis', since it interprets the header automatically, which I like . Tell it to look for a 3D table at XXXX, and it does the rest.
      1987 GTI 16v, no build thread.

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      08-18-2010 08:37 AM #28
      Quote Originally Posted by B4S View Post
      Got the software, so far it seems quite interesting. It's necessary to input the addresses of each map, but the program deciphers the header on it's own, making axis population a breeze (if you don't have WinOLS). You have to populate the descriptor lookup table, with the characters and the offsets/conversions, as well as sort out the checksum calculation, but it's fairly simple with the early motronics. There is no need to program in the size of the x-y axis', since it interprets the header automatically, which I like . Tell it to look for a 3D table at XXXX, and it does the rest.
      Its so simple once you read the links I have posted. Once you know the RPM and MAF descriptor number the maps pop out at you right away. If you use an emulator its just like tuning a standalone. People think this takes some kind of computer nerd to do it but its really pretty simple.

    4. 08-18-2010 09:50 AM #29
      Quote Originally Posted by Jefnes3 View Post
      If you guys want some help just ask.

      Jeffrey Atwood
      United Motorsport
      do you no if there is a 8bit or 16bit single value injector constant in the obd1 m2.9 vr6 ecus

    5. Member B4S's Avatar
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      08-18-2010 10:06 AM #30
      Quote Originally Posted by TIGninja View Post
      Its so simple once you read the links I have posted. Once you know the RPM and MAF descriptor number the maps pop out at you right away. If you use an emulator its just like tuning a standalone. People think this takes some kind of computer nerd to do it but its really pretty simple.
      Dude, maybe I missed something, but the only link you've posted in this thread is the Youtube one. I'm going to use this software to complement my XDF, since I've put a ton of work into it already, and Tunerpro is needed for the tracing anyway. I just like having a selection of tools to accomplish a single task, options rule .
      1987 GTI 16v, no build thread.

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      08-18-2010 12:02 PM #31
      Quote Originally Posted by B4S View Post
      Dude, maybe I missed something, but the only link you've posted in this thread is the Youtube one. I'm going to use this software to complement my XDF, since I've put a ton of work into it already, and Tunerpro is needed for the tracing anyway. I just like having a selection of tools to accomplish a single task, options rule .
      Surprise the link went missing.

      http://www.vwforum.com/forums/f11/ob...-thread-43655/

    7. Member B4S's Avatar
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      08-18-2010 01:56 PM #32
      Ah ha, the good stuff .

      I just registered, I'm following that thread, DEFINITELY!
      1987 GTI 16v, no build thread.

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      08-19-2010 09:40 AM #33
      If I get bored today I will show everyone how to set up the main fuel and timing tables in tunerpro.

    9. 08-29-2010 10:39 PM #34
      this looks intresting but a lil expensive programable digital maf with usb plug
      whats your thoughts http://www.abacoperformance.com/

    10. Member
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      08-29-2010 11:15 PM #35
      all very intresting, definatley watching. dont quite understand all of it yet but it is something i would like to learn.

      one question though... does this have the potential to convert tunes to blow thru maf tunes?

    11. Banner Advertiser Jefnes3's Avatar
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      08-30-2010 08:22 AM #36
      re: Blow thru maf

      Sure this works already. The issue is density error at the maf.
      So, once you able to properly map the fueling, you'll be able to map out the error.

      -Jeffrey Atwood
      UnitedMotorsport.net
      Email UnitedMotorsport
      Funny how launch control and NLS were gimmicks when Matt bought it to med9.
      Now others are using it to make people think the sun shines out of their 4$$.

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      08-30-2010 06:22 PM #37
      Quote Originally Posted by Ex-ricer01 View Post
      all very intresting, definatley watching. dont quite understand all of it yet but it is something i would like to learn.

      one question though... does this have the potential to convert tunes to blow thru maf tunes?
      To do this by altering the tables is going to be kinda tricky. What I am doing is opening the door for you guys. What you do when you get in is up to you.

    13. Member tomslik's Avatar
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      08-31-2010 07:42 AM #38
      Hey thanks for the post... I need zero to hero help but this is a good start. The beginning of the tread, well that wasn't the English I recognize

    14. Member B4S's Avatar
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      10-15-2010 09:24 AM #39
      Back from the dead...
      The software I was talking about earlier now seems to be heading for an update to v.2...complete with M2.9 configuration data already included . Next wed is the day I'll be springing for the update, can't wait!
      1987 GTI 16v, no build thread.

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      10-17-2010 08:40 AM #40
      Everyone have your bin file downloaded? Its time to get this party started.

      http://www.easy-share.com/1911398084/ABA_OBD1.bin

    16. Member B4S's Avatar
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      10-17-2010 11:37 AM #41
      I'm ready coach!
      1987 GTI 16v, no build thread.

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      10-17-2010 12:08 PM #42
      You dont need any of these things yet to learn this and if your tuner already has them you may never need them

      This is the equipment you will need eventually,however most places that have a dyno already have these things.

      BURN2 Chip Programmer [BURN2] - $85.00 : Moates.Net


      This is the ostrich. Most honda tuners now have the V2.0 ostrich so this can be done by them.

      Ostrich 2.0 : The New Breed [OSTRICH_2] - $175.00 : Moates.Net

      And a couple of EEPROMs. I would get two or three of these. Most of your tuning is going to be done with the emulator. Again this is something that most honda tuners already have in stock.

      C2 SST 27SF512 Chip [C2] - $5.00 : Moates.Net

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      10-17-2010 12:11 PM #43
      Now for the free software that you will need to download.

      here is a good hex editor that will be used for a while to show you the principles of how to do this. Most of the things we will be learning are going to be done automatically by the software that we will be using as well.

      http://www.x-ways.net/winhex.zip

      Here is the main tune software that we will be using.Its called tunerpro and its a configurable software the is specifically for tuning chip files.Its free however I recomend giving the developer some $$$.

      TunerPro and TunerPro RT - Professional Automobile Tuning Software

      Also get your winols demo right here. Its very good for identifying maps.

      Download WinOLS DEMO 1.098 - Free Download Review at Shareware Connection Software Portal, No Crack Serial Number, No Key Warez

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      10-17-2010 12:14 PM #44
      Before we can do anything we need to know how to correct the checksum. Once you learn how to do this you will be ready to start (kinda).

      Lets start out with the 93-95 OBD1golf/jetta chip file.Everybody get it downloaded and we will start here.

      Now open up your hex editor(winhex) and open up the file.The first thing we need to do is find the checksum and be able to recalculate it.

      The checksum in most motronic chip files is by the file ID tag.This is usually located after most of the code and the maps in the file(we will get to that later).In this case its at CF00 and CF01.The checksum is a 16bit checksum and is the total of the block from 0000-CEFF.If you click edit- define block and type in the 0 for the start of the block and CEFF for the end of the block the hex editor will highlight that part of the chip file.Now you have the block selected to checksum.Click tools-calculate hash.On the drop down pick 16bit and then OK.That will spit out the checksum of the block.You will also notice this matches the locations CF00 and CF01.

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      10-17-2010 12:17 PM #45
      Ok when everyone gets caught up here we will move forward on how to set this up to do it automatically in tunerpro. I just want everyone to understand what we are doing here first and it give everyone a chance to get used to dealing with what seems to be a bunch of random numbers and letters.

    21. Member B4S's Avatar
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      10-17-2010 04:25 PM #46
      That checksum is a pain in the behind, having tunerpro fix it automatically will make tuning a lot easier.
      1987 GTI 16v, no build thread.

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      10-17-2010 04:28 PM #47
      Quote Originally Posted by B4S View Post
      That checksum is a pain in the behind, having tunerpro fix it automatically will make tuning a lot easier.
      Well if you have a good checksum when you start the car you will be fine until you shut it off if you emulate. Then all you would need to do is to checksum when your done tuning,but the easiest way is to have the checksum update everytime you upload.

    23. Member B4S's Avatar
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      10-17-2010 04:34 PM #48
      Nice, good to know. I've barely had a chance to emulate any OBD1 cars yet, but the ones I have tinkered with never popped a CEL during emulation...always wondered why. I'll be playing with winhex tonight, thanks for the info!
      1987 GTI 16v, no build thread.

    24. 10-18-2010 01:59 PM #49
      how does this timing map look for a 8.5.1 compresion vr6t base map if i alter all three 16x1 wot timing maps to the same value
      plus the 4 12x13 timing maps to the same value marked yellow is the peak load areas
      on the stock timing map and lower pic is the lowered timing map example




      im aware i will have to be carefull with det and log timing with vag-com to see if any is being pulled

    25. Member B4S's Avatar
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      10-18-2010 02:19 PM #50
      With low compression, I'd say you're definitely on the safe side of the timing at WOT/boost.

      I really love the 'tune-it-yourself' community
      Last edited by B4S; 10-18-2010 at 02:50 PM.
      1987 GTI 16v, no build thread.

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