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Evo 8 Ecu In 2g Works!!

Posted by GSXDNA, Oct 31, 2008

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  1. GSXDNA

    GSXDNA Proven Member

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    I understand the knock sensor is essentially a microphone, but I though the signal from the microphone was processed and converted to a voltage before it ever reaches the ECU.

    Interesting. If that's true, there goes that idea.
     

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    1999 Mitsubishi Eclipse GSX
    · 2G DSM
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  2. steve

    steve DSM Wiseman

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    No it's a raw sensor with possibly an amplifier. While the amplitude varies it's the processing the ECU does on the frequencies received looking for the sounds of knock at the right times to be knock.
     

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    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  3. the_mork

    the_mork Moderator

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    But we now have control over internal ECU calculations and outputs so why can't we take a look at 2g code that makes the boost gauge work for knock and just borrow the output structure then all that we would have to do is get the knock count exported to an already existing function.

    I'm not really a programmer so I'm not sure how hard that would be but it seems more useful than straight knock voltage which would never mean anything except to verify that the engine is running.
     

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    1997 Mitsubishi Eclipse Spyder GST
    automatic · 2G DSM
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  4. steve

    steve DSM Wiseman

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    This is what we do on the other DSM ECUs but I'm not convinced that you (ie. most people) have the needed "control over internal ECU calculations and outputs" yet. Your on the right track but I don't know very many people who can actually write code for this CPU and have disassembled the stock code to know where to get the correct places are to do this.

    Does the code that people are basing this conversion on support a boost gauge?
     

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    1991 Mitsubishi Eclipse GSX
    manual · 1G DSM
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  5. m_0ney_pit

    m_0ney_pit Proven Member

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    Evoscan supports warnings for knock so you can set a switch for say 0-3 counts of knock and your computer will say "engine knock detected". You can make it say basically anything for a switch as long as you have the audio file. You could make it say something like "unicorns detected in filters" for example.
     

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    1998 Eagle Talon TSi AWD
    awd · automatic · 2G DSM

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    manual · 2G DSM

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    1999 Mitsubishi Eclipse GST
    manual · 2G DSM
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  6. GSXDNA

    GSXDNA Proven Member

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    True, but this requires you to have a laptop on in the car running EvoScan. It would be really convenient if there was a way to trigger a switch in EcuFlash, kind of like the way you can trigger your CEL to flash with DSMLink with a user-defined knock level. This way you could always be aware of knock, even if you don't happen to have a laptop on you.
     

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    1999 Mitsubishi Eclipse GSX
    · 2G DSM
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  7. turbolarry

    turbolarry Proven Member

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    There is a way to do a CEL with a certain amount of knock on an Evo...
    but I haven't tried it and definately haven't tried it on an Evo ecu in 2g.
    Anyway there's a guy in Austraila that is very good at coding and patching for Evos. His stuff is on evolutionm :)barf:) but a lot of evos are running around on his stuff. His name is tephra and here's the thread;
    PATCH: NLTS + Valet + KnockCEL - evolutionm.net
    Like I said I haven't tried it, but a brainiac could take a look at the code and maybe make it work.
    I don't know what ROM you're running and I don't even know if you could switch to another VIII ROM and still run it on a 2g, but this is really exciting stuff and it makes me want to scoop up a 2g gsx.
    :thumb:
     
  8. GSXDNA

    GSXDNA Proven Member

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    AWESOME!!!!

    Thanks so much for sharing. It all actually looks fairly straight forward and simple, up until the immobilizer part. I will play around with this and see if i can get it working.
     

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    · 2G DSM
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  9. GSXDNA

    GSXDNA Proven Member

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    K, I just tried these patches out. I was able to get EcuFlash to recognize and display the new features like the CEL knock light and the valet mode option by tweaking the XML file. However, the base "hacked" ROM he provides as a template does not have the immobilizer disabled. Therefore, when I flashed the new ROM to my car, the car wouldn't start (which is what I expected). I tried PMing tephra but his inbox is full.

    If there is anyone out there who knows how to edit a hex file, all we need to do is compare the immobilizer code from the hex file on my base
    ROM (that has the immobilizer disabled) to the hex file that tephra provided as a template ROM for all those awesome extra features, tweak some code, and everything should work.

    Any takers? I've never edited a hex file before, but I'll take a stab at it if there is no one else willing.
     

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    1999 Mitsubishi Eclipse GSX
    · 2G DSM
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  10. turbolarry

    turbolarry Proven Member

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    He gave up on trying to keep up with PM's and I don't blame him because everyone is always asking him for help.
    There is a way to disable the immoblizer.
    Which ROM are you using?
     
  11. GSXDNA

    GSXDNA Proven Member

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    I'm using the ROM he includes in the zip file on the forum link you posted above. If I knew what the hex address was for the immobilizer, it may not be too difficult.

    I'm also using the ROM metadata XML file in his zip file as well. I tried typing in "FFFF" in EcuFlash to disable the immobilizer, but that didn't work.
     

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    1999 Mitsubishi Eclipse GSX
    · 2G DSM
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  12. ewoevo

    ewoevo Proven Member

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    See if this helps: How to disable immobilizer on EDM Evo9? - evolutionm.net
     
  13. GSXDNA

    GSXDNA Proven Member

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    · 2G DSM
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  14. ewoevo

    ewoevo Proven Member

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    According to the post, it's the same for all EVO ECU's (except maybe the new X's).
     
  15. GSXDNA

    GSXDNA Proven Member

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    I was able to get in touch with a guy from the OpenEcu forums that has experience disabling immobilizers, so he's taking a look at it my new Tephra ROM for me. Hopefully I should have some results in the next few days.
     

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    1999 Mitsubishi Eclipse GSX
    · 2G DSM
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  16. Sam@RRE

    Sam@RRE Proven Member

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    wow dave, you took this and ran with it. Im impressed. :thumb:
     
  17. GSXDNA

    GSXDNA Proven Member

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    Thanks Sam. I wouldn't have made it this far without your help with getting the car running initially.


    I Just bought a new clutch, and I'm looking into larger injectors now. When all that is done (hopefully in the next 1-2 months), I'll be calling you for a final tune.
     

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    1999 Mitsubishi Eclipse GSX
    · 2G DSM
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  18. Sam@RRE

    Sam@RRE Proven Member

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    surely, let me know
     
  19. mike96

    mike96 Proven Member

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    I just want to make sure I am on the right track here with this. I picked up an ECU from a guy on evolutionm.net but i am waiting for my cable to come in from limitless.co.nz before i start the swap.

    On a 96GST I will either have to install a CAS at the back of the head or change the firing order by either swaping the plug wires or switching the pins at the ecu for the power transistors... correct?
     

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    1995 Eagle Talon TSi AWD
    manual · 2G DSM
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  20. boostin92awd

    boostin92awd Proven Member

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  21. jjgrizz73

    jjgrizz73 Proven Member

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    Ok guys, did the swap today. Flashes, starts up but the tach is screwy jumping around and here is whats bothering me the most. I turn the key OFF and take it out with the TT off and the car doesnt stop running. The ignition wires for the 2g and evo are the same so theres no reason why it worked before but not now after the evo ecu is in. Anyone have any ideas??
     
  22. the_mork

    the_mork Moderator

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    Try double checking that you got the pin changes right, that is the only thing I can think of.
     

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    1997 Mitsubishi Eclipse Spyder GST
    automatic · 2G DSM
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  23. jjgrizz73

    jjgrizz73 Proven Member

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    double checked them all, plus didnt touch the 2 pins that involve ignition.:confused:
     
  24. jjgrizz73

    jjgrizz73 Proven Member

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    Another thing, I broke the ecu pin for the fuel pump relay and never hooked it up. But the thing is, I have the fuel pump hooked up to a hardwire/switch so I didnt think I'd need to hook that pin up for the evo ecu. But would something in the circuit cause a problem and still need it to be hooked up even if its not in use?
     
  25. tom04841

    tom04841 Proven Member

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    Rockland, Maine
    I just did the swap on my 2g. After installing the Evo ecu and swapping the necessary pins
    (mainly pin 79 which is the flash port), I can't read or write to the evo ecu. I can log with evoscan tho.

    At first I installed ecuflash 1.4, but as soon as i tried to read the ecu, ecuflash would
    crash. I then uninstalled 1.4, and installed 1.29a. I am able to attempt a read without
    crashing. It goes thru 3 init sequences, but i end up getting and error of "no
    response to any known code". I even tried running ECU Unlocker in the background
    before opening ecuflash....still same error, but with one more init sequence.

    I have spent the last 2 days searching the net, openecu.org, and aktivematrix. Some have
    has cable issues, some haven't. I just need to get this working one way or another so I
    can flash a rom to the ecu with the immobilizer disabled so I can actually start the car.

    Anyone have any ideas?
     

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