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Thread: ECUflash for v6 N/A

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    ECUflash for v6 N/A

    I just managed to get the rom out of -02 Avance 2.5 V6, it seems to have a 7203. Has anyone tried the same? Does anyone have any kind of definitions? The identifying data seems to be in a different place compared to vr4...

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    Interesting!

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    I don't think that it will be worth the effort on N/A

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    Alex has a good point. It's often been realised that the factory map on the V6 is actually pretty good, especially for factory!

    No harm in trying (unless you kill it, of course! ), and there MAY be some gains to be had, although I would expect any gains to be minimal, perhaps a bhp or two. There may be some room for improvement on cruising economy though, perhaps?
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    All N/A V6 is either 7202 or 7203 btw...

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    Yes, already managed to get out the memory model. It is EM2434 for this 7203Fa model. There was this wild idea that could we use these ecus for vr4 but the ignition is different.

    Actually I'm doing this for practice. I want to learn something about disassembly.

    Perhaps a whole new exhaust and exhaust manifolds could need some tuning from ecu too, but you can't tune ignition, right?
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    Found Hi & Low octane fuel maps (10x15), actually i'd be better off disassebling GDi Rom but it doesn't appear to have a H8 processor. Maybe more like evo 7-> hopefully.

    Bugger, no can do with the GDi. Either it has some kind of weird ecu or OP 2.0 doesn't work with evo 7 and it's relatives.
    Last edited by lateshow; 20-03-2011 at 02:56 PM.

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    Now I have the locations for Hi&Lo Fuel and Hi&Lo ignition, doesn't seem too aggressive.....

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    Which means... ?

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    All Jap manual ST-R's are 7201 with steel case. Jap car's also have only one O2 sensor.

    Did any cars in Europe come with a 7202 or 7203 and have only one O2 sensor?
    If I'm replying to your thread and helping you out, it is because I like you and want to help out your VR-4 ownership. No other reason

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    Did any cars in Europe come with a 7202 or 7203 and have only one O2 sensor?


    Brad. Mine was a mid facelift V6-24 and had 2 sensors. One pre and one post Cat. I believe the ECU I sent you all those yonks ago was a 7202/3. Certainly had the plastic case. It was MY2000. From sport etc onwards I believe they started the extra sensors in the manifolds. Don't think any, including pre facelift had just one sensor ala VR4.

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    In my V6 -> VR2 (1999) it was already 2-sensored. But I have no idea what ECU was in back when it was V6 N/A.

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    No euro Galants had only one lambda, Brad. No matter what engine...

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    Andy, I never received that ECU! I had just thought you had forgotten about it!

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    Oh nads! That must have been 18months / 2 years ago? Don't think there's much I can do now. Still, at least it was a freebie, but not the point really. Did you get another one then? Oddly I sent out a VR4 one (UK) never heard if that one was recieved. Again though it was only an unwanted one on my part. Guess ECUs me 'n post dont mix .

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    So what does the map look like. Could it be adjusted for a better drive? Or are they really good from factory as I was told and no point adjusting map.

    -----169hp -----175ibft -----

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    would be interesting to see the difference between european spec v6 and jap spec v6, as there are 12 hp difference, although it is the same engine. possibly due to exhaust gas regulations? (would explain the difference in numbers of O2 sensors too). But what effect does it have on engine mangement? where does the 12 hp come from?
    the one and only...Pearl White Legnum 25 ST-R...registered in Germany - now featuring a 6A13TT engine (unless you know otherwise)


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    Poss better fuel rating in Japan.

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    They are designed for standard fuel in Japan which is 93-94 octane.

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    I need to do something similar with the FTO when I get silver one back and see what chip that has in it.
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