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Thread: 2jz-gte pinging - was gt35/40 with standard ECU

  1. #16
    back into it Chief Engine Builder
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    Quote Originally Posted by Draven
    well that was all jolly good fun.
    completed the 12v fuel pump mod with no dramas at all, and it still hasn't made a difference.

    I have just found that if I push it till it cuts on me, and keep the accel down slightly, even to below 4000rpm, it still won't let me boost. I have to let off the accel for 2-3 secs before it will give me back regular power.

    same ecu setup as the 1ggte's on over boost! get the check engine light and have to wait a few secounds before planting again!

  2. #17
    Party Animal Supreme Too Much Toyota MR 1JZ's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    thanks for that norbs...ill have to do a search on supraforums and find out how you go about doing it...im pretty keen to do it to my aristo as ive been told you can get close to 270rwkw out of the stock turbos
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  3. #18
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    TTC doesn't give you any extra power, it just makes the power delivery more linear and predictable. I was running that way for a while and liked it a lot, but I switched back because I got sick of the exhaust noise; a side-effect of TTC is the exhaust is twice as loud.

    There's a pretty good write-up on mkiv.co.nz, go looking for it there. You just need a bit of vac hose and 2 minutes, and if you don't like it you can reverse the procedure just as easily.

  4. #19
    MR 18RG Chief Engine Builder The Witzl's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    Quote Originally Posted by Norbie
    TTC doesn't give you any extra power, it just makes the power delivery more linear and predictable. I was running that way for a while and liked it a lot, but I switched back because I got sick of the exhaust noise; a side-effect of TTC is the exhaust is twice as loud.

    There's a pretty good write-up on mkiv.co.nz, go looking for it there. You just need a bit of vac hose and 2 minutes, and if you don't like it you can reverse the procedure just as easily.
    and here's Greg's interpretation:

    Quote Originally Posted by Greg heard norbie
    TTC doesn't give you any extra power, it's just really difficuly and a side-effect of TTC is the exhaust is twice as loud.

    There's a pretty good write-up on mkiv.co.nz, but it's a massive effort to read and will take 3 years. You just need eleventy billion dollars and an unobtainium rod, and the procedure is completely irreversible.
    ...... butt scratcher?!


  5. #20
    I make people cry Chief Engine Builder Draven's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    actually, I read the yankee version which required 1-way valves, which I don't have lying around.
    perusing the nz one now
    http://www.toymods.org.au/forums/showthread.php?t=7465
    Quote Originally Posted by xero View Post
    and of course campbell newman's completely fucking everything he touches so badly that he should be called dick fingers.

  6. #21
    Party Animal Supreme Too Much Toyota MR 1JZ's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    You must spread some Reputation around before giving it to Norbie again.
    spewing

    oh well thanks for the info anyway...ill definitiely be persuing it when my aristo lands and I dont overly mind the extra loudess of the exhaust...does it cause any extra wear to the turbos considering they are now both running at the same time?
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  7. #22
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    I doubt there's be any appreciable difference in wear. If anything it would extend their lifespan slightly as turbo #1 isn't making boost nearly all the time. With TTC you only get boost when you really sink your boot in, not when you're cruising around at a leisurely pace.

  8. #23
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    For anyone who's interested, I dug up the TTC article I was talking about earlier:

    http://mkiv.supras.org.nz/articles/andy.htm

    I recommend anyone with a 2JZ-GTE tries this at least once.

  9. #24
    Party Animal Supreme Too Much Toyota MR 1JZ's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    woohoo

    thanks again for that
    Project Soarer II - Sold
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    "I'm the man who has the ball. I'm the man who can throw it faster than f**k. So that is why i am better than everyone in the world. Kiss my ass and suck my dick... everyone."

  10. #25
    I make people cry Chief Engine Builder Draven's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    woohoo.. with ttc I never make any boost, ever
    http://www.toymods.org.au/forums/showthread.php?t=7465
    Quote Originally Posted by xero View Post
    and of course campbell newman's completely fucking everything he touches so badly that he should be called dick fingers.

  11. #26
    I make people cry Chief Engine Builder Draven's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    now, since I know #1 turbo works, and I can hear it spooling even in TTC, what I assume is happening is, for some reason, #2 turbo is not spooling. As a result all the boost from #1 is just going through the #2 compressor wheel backwards.
    possibility #1: turbo 2 exhaust wheel is currently lodged in my cat. As this problem first presented on a dyno, and there was no indication of massive turbo failure, I'm thinking (hoping) this isn't it.
    Possibility #2: for some reason, #2 turbo is not getting any exhaust gas, and therefore is not spooling.
    my current guess is the EGCV is not putting any exhaust through the #2 turbo. Since the TTC had no effect, I'm ruling out the VSV for the EGCV.
    How hard should the EGCV be to move? mine requires a LOT of muscle to get it to move. Also, what's its natural position? open?
    http://www.toymods.org.au/forums/showthread.php?t=7465
    Quote Originally Posted by xero View Post
    and of course campbell newman's completely fucking everything he touches so badly that he should be called dick fingers.

  12. #27
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    Yes it takes a fair bit of effort to move it. The natural position is closed.

  13. #28
    Junior Member Automotive Encyclopaedia
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    you could try to manualy open the pre spool vave for the no 2 first , a lot easy than removing egcv .
    Dave

  14. #29
    I make people cry Chief Engine Builder Draven's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    even if the pre-spool valve was stuck closed, the second turbo should still come in when the exhaust control valve opened... it should just just be laggier due to starting from a dead stop.
    Will check it tomorrow anyway, it can't hurt.
    Looking more and more like a blown turbo unfortunately.
    http://www.toymods.org.au/forums/showthread.php?t=7465
    Quote Originally Posted by xero View Post
    and of course campbell newman's completely fucking everything he touches so badly that he should be called dick fingers.

  15. #30
    Toymods Pimp Chief Engine Builder Norbie's Avatar
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    Default Re: 2jz-gte pinging - was gt35/40 with standard ECU

    If your spark plugs have been copping physical damage, there is a possibility a fragment made its way through the #2 turbine and reduced it to expensive ceramic fragments. Let's hope it's nothing that serious though.

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