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Evo 8 Ecu In 2g Works!!

Posted by GSXDNA, Oct 31, 2008
Tuning & Engine Management - 4G63 EPROMS, ECU, MAF, knock, EGT, wideband, datalogging, fuel trims, etc.

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  1. 4nturbo

    4nturbo Proven Member York, Pennsylvania

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    Ok I have a few questions on your pin out you have pin 78 empty 2Gs don't use that pin but the EVO 8 ECU has pin 78 for the knock sensor imput so is the evo8 ecu not getting a knock signal with your set up? Also pin 43 on 2g is eng/trans toqure reduction request signal 2 witch becomes clutch position input signal on evo8 ecu. Looking at the 2G pin out I see pin 7 (empty on evo8 ecu) is toqure reduction request signal 1 and pin 43 is toqure reduction request signal 2 seeing as how the 2G knock sensor has 2 wires could 1 of these 2 wires need to be hooked up to pin 78 for knock sensor input. toqure reduction request signal sounds like eng. is knocking pull timming to me and thats what a knock sensor does ? just a thought.
    I plan to do this swap very soon as I have a good friend with an evo8 who has an extra ecu hes going to give me as in free my car is a 2G automatic so Im going to delete pin 91 witch is used for park/netrual switch only used on automatic cars. he also has everything needed to do the reflase and does all his own tunning on his Evo.
    Thanks for the info in your write-up as it helped me decide to do this swap I hope to get this ECU swap to work in my Automatic car with in the next few weeks
     
  2. GSXDNA

    GSXDNA Proven Member Los Angeles, California

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    Pin 78 is not empty. Pin 87 is empty. 78 is the knock sensor for both ECUs. I haven't updated the 2G ECU for the missing pin labels in my post yet to reflect this. I have logged and tuned with this configuration, and the knock sensor is definitely working properly. I think that answers your other questions too.

    When I hooked an AEM EMS up to an automatic car, I let the stock ECU control everything but the fuel and timing - which I let the EMS control.
     
  3. 4nturbo

    4nturbo Proven Member York, Pennsylvania

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    yep that answers my question thanks
     
  4. GSXDNA

    GSXDNA Proven Member Los Angeles, California

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    Thanks again for all your help man. It's a lonely place to be when you're having a problem with a project that few (if any) have tried.

    The temperature controls work fine now, but the blower motor is still cutting out. Some days it will work, and some days it won't. Definitely not an ECU issue though. Probably a bad relay or a faulty switch. I may just have the dealer fix it when I go to have my new clutch put in.
     
  5. the_mork

    the_mork Moderator Eau Claire, Wisconsin

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    While looking for an ecu for my car I ran into another person asking about evo8 ecus for an eclipse and he wanted specifically an 03 ecu so that he didn't have to deal with ACD.

    I was going to ask about it here but I did some quick searching instead.

    ACD is Active Center Differential. Obviously something we don't have.

    The question that remains is whether or not we can use an ecu that has ACD or if ACD can be flashed into nothingness.

    Anyone playing with that sort of stuff yet?
     
  6. ewoevo

    ewoevo Proven Member San Antonio, Texas

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    I'm pretty sure the engine ECU does not control the ACD. I believe the ACD has its own computer. Any EVO 8 ECU should be fine. I don't know about the 9, though, since it has MIVEC.
     
  7. the_mork

    the_mork Moderator Eau Claire, Wisconsin

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    Is anyone familiar with a TurboXS Utec? The guy that I'm buying my ecu from says that he'll include one for pretty cheap and I just wondered if it was worthwhile on our cars. So far it seems like it wouldn't be a whole lot of improvement but the price seems right. It offers 5 selectable maps, water/meth/nitrous control. Dedicated injector and timing control ie: 10* BTDC == 10*BTDC and not "BASE TIMING"+"ADVANCE"+/-"CORRECTION VALUE". I'm just not sure what value that would have in the dsm though since most of that is based on also adjusting boost at the same time.

    Speaking of boost, have we considered the value of using an evo boost controller? I may be mistaken but it sounds like they have much more variability than our BCSs and could actually turn into a useful tool to replace EBCs
     
  8. GSXDNA

    GSXDNA Proven Member Los Angeles, California

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    Also remember that the later models have MIVEC.
     
  9. jrohner

    jrohner Proven Member Willmar, Minnesota

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    The 9 has different plugins I believe.
     
  10. mnetwork

    mnetwork Proven Member Ridgefield Park, New_Jersey

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    Is it possible for someone to put a map for a stock 2g. That way we could flash that to the ecu when we do the swap and then work off of that...
     
  11. delta448

    delta448 DSM Wiseman Waynesburg, Pennsylvania

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    The stock Evo tune is probably a better starting point.
     
  12. GSXDNA

    GSXDNA Proven Member Los Angeles, California

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    The stock evo maps are more than good enough to get you up and running.
     
  13. jrohner

    jrohner Proven Member Willmar, Minnesota

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    I've seen the stock evo 8 fuel maps, they suck big time. They are woken up a lot by leaning out the top end.
     
  14. ewoevo

    ewoevo Proven Member San Antonio, Texas

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    I started to put my EVO ECU in today. I have the extension harness to make it easier (or so I thought). I swapped pins 8 & 22, according to the extension harness numbering, but noticed the pins aren't located in the same place as the pinout on the first page. I think I need to ignore the harness numbering and go with the pinout numbering. Can someone please take a look at the pic below and let me know? On the left is the harness with pins 8 & 22 identified. On the right is the EVO ECU.
     

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  15. the_mork

    the_mork Moderator Eau Claire, Wisconsin

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    Alright so I should have an ecu on its way. I just realized now that I probably don't have a flash port (the car is put away for the winter so it isn't terribly easy to physically check). Does anyone know how easy it is to wire one in or can you point me in the direction of where to find the information?

    A lot of DSMers will probably need this information in the near future.
     
  16. the_mork

    the_mork Moderator Eau Claire, Wisconsin

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    It would be possible to put this ecu in a 1g but it would be very time consuming and probably not worth the effort at all.

    For 1g cars you should really check DSmap.

    Although if you want to try I'm not discouraging you.
     
  17. Ceddy

    Ceddy Proven Member Reading, Pennsylvania

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    There is only one wire used for the flash port, so its easy to add.

    The right way to do it would be to get a pin tool and add a pin to your ecu harness plug.

    But you can just stuff a wire in the harness plug after its plugged in to the ecu.
     
  18. GSXDNA

    GSXDNA Proven Member Los Angeles, California

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    Sorry I've been MIA for a while...been terribly busy.

    So yeah, this is the only tricky part about doing this swap. When you introduce a harness/multiple ECUs into the picture, the pinout perspective can be a little difficult to grasp at first. It is very hard to explain in words, but I will try.

    IF your harness is the same as mine (please post a few pics so I can see how the wires run), here is what I would suggest:

    Don't even look at your EVO ECU. Put it aside, and just look at the harness and the two pinouts I posted on page 1 of this post.

    First, lay the harness out on as if you were about to plug the harness into the connectors in your eclipse. This end is your reference end. This is the end that corresponds to the pinouts I have on page one. Now, put your finger on pin 14 (the bottom-most right pin). Trace that wire from the end that plugs into your eclipse to the end that will plug into the EVO ECU. Wherever that pin connects to, that is also pin 14 on the evo connectors, which will also be the bottom-most right pin on the EVO connectors as long as you are viewing the harness with the correct perspective.

    Here's how I was able to gain the proper perspective:

    With your left hand, hold up the eclipse end of the harness farther away from you so that pin 14 is bottom-most right. Then, with your right hand, hold the evo end of the harness closer to you, so that all the wires are a straight line from end to end. This should make it so that you are viewing the eclipse end of the harness from the back (where wires are comming out) and the evo end of the harness is being viewed from the front (where no wires are comming out, but where the plugs would go into the evo ECU). Now, trace pin 14 from eclipse end to pin 14 on the evo end, and apply the pinout logic viewing the eclipse end from the back and the evo end from the front. Everything should make sense now.

    This is probabaly why the labels on your harness appear to not mesh when you view bot ECUs separately. This is also why the guy at RRE accidentally hooked my 02 sensor up wrong.

    Sorry for the lengthy explaination. I hope it didn't confuse you further. If you are still having trouble with this, let me know and I can try to make you a diagram. This is the best I can offer with a textual discription.
     
  19. jjgrizz73

    jjgrizz73 Proven Member Carbondale, Pennsylvania

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    getting ready to do this swap sometime in the next week or two. My buddy has an Evo 8 that he flashes himself with ecuflash, he is helping me set this up and giving me a close tune of course I will have to go over this again in the spring. This whole thing just has me baffled of how easy it is to do. Cant thank you guys enough for attempting this, I never even thought about it. Have you flashed and ran your car since the install?
     
  20. GSXDNA

    GSXDNA Proven Member Los Angeles, California

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    I've probably flashed my ECU 20+ times since the install. Works fantastic. No issues whatsoever.

    I am also baffled that more people haven't been doing this. I know I'm not the first person to think of it.
     
  21. PieEyedPiper

    PieEyedPiper DSM Wiseman North Bay Area, California

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    I heard of it being done a couple of years ago, but there was never anywhere close to this much documentation. I think thats why so many are enamored with this. It's rare and elusive.
     
  22. steve

    steve DSM Wiseman St. Charles, Illinois

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  23. m_0ney_pit

    m_0ney_pit Supporting Member Reading, Pennsylvania

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    Lots of questions
    Are you running the evo8 maf with this?
    Have you noticed any difference in drivability or other weird stuff?

    Does the electronic boost control work, i saw some tables when i was going through a tuning tutorial for ecuflash and apperently you can change wgds and other bcs values...wonder if the 2g bcs is compatible to do this.

    Wonder if its possible to run a GM maf by changing the values in the evo8 maf table...
     
  24. the_mork

    the_mork Moderator Eau Claire, Wisconsin

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    It looks like most people aren't and the scaling seems pretty easy to set.

    I wondered about this too, I'm pretty sure the stock 2g bcs will not be useful but that an evo8 one might be, and I'm betting they're cheap.
    First of all I'm pretty sure the cables aren't even remotely similar, second there is enough difference that I'm pretty sure scaling on any level will be fruitless. The evo guys use a translator so its unlikely that we are going to find a workaround.
     
  25. m_0ney_pit

    m_0ney_pit Supporting Member Reading, Pennsylvania

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    yea I bet getting a evo8 bcs would let us control the boost, its probably just a 2 wire (signal and ground) sensor like the 2g is.

    In regards to the GM maf wonder if it would be best to get a evo 8/9 maft or chip from fullthrottlespeed.com or if its better to use a 2g maft and change the values in ecuflash.
     

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