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Engine ECU tuning

Discussion in 'Powertrain' started by Vibe, Jul 29, 2006.

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    Vibe New Member

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    ECU tuning

    I know the ECU is tuned for 87-octane gas. How hard would it be to re-tune it for higher octane (for example, 92 octane)? How expensive will ROM tuning run me?
    Vibe, Jul 29, 2006
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    vortex Well-Known Member

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    i'm not even sure anyone does this to be honest.
    vortex, Jul 29, 2006
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    Paolino SolidTuned

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    check out enginuity.org. Open Source ECU Tuning. I know the guy that wrote the software..
    Paolino, Jul 29, 2006
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    Vibe New Member

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    will it yield any performance gain?
    Vibe, Jul 29, 2006
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    e_andree E

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    i wouldnt see how so
    e_andree, Jul 29, 2006
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    James Bullshit Police

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    toyota ecu's dont use roms - we're not driving hondas you know....

    the ecu will actually adjust itself if you put higher octane gas as long as you're in closed-loop mode. the ecu looks at the long and short term fuel trims and makes calculations on how much fuel to use and how much to advance ignition timing. granted you'd be able to capitalize much more with an emanage if you wanted to go to a higher grade fuel, the stock ecu will tune itself (to a certain degree) to those types of changes.

    bottom line - emanage is basically the best way to get gains from something like switching to higher octane fuel.
    James, Jul 29, 2006
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    Vibe New Member

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    how much does the greddy emanage cost plus installation?
    Vibe, Jul 29, 2006
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    James Bullshit Police

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    installation is a bitch because it will take many hours and shops charge a lot for labor, but if you do it yourself you can get the cost down to about 400 maybe

    dunno how much install would cost, did it myself
    James, Jul 29, 2006
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    vortex Well-Known Member

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    ditto - i wrote a manual for it too lol
    vortex, Jul 29, 2006
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    James Bullshit Police

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    props vortex, that got me through everything...

    but if you have a 00-02 the pinouts are a tiny bit different
    James, Jul 30, 2006
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    SkyAce2004 New Member

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    Ive got an emanage ultimate in my car and with the help of Vortex's guide, I installed it myself in about 2-3 hours. It was a pain to do, but well worth not paying a shop to do it. On the rare occasion that I use 93 octane, i usually advance the ignition a few degrees. Its not much of a power gain, but it is barely noticable. Ive also got my fuel map tuned to A/F 14.7 through the whole powerband. Without the tuning, your engine runs REALLY rich at WOT. Ive got a wideband o2 sensor installed. I know.
    SkyAce2004, Aug 1, 2006
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    Barnacules 100101101011011

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    I need a wideband o2 :)
    Barnacules, Aug 1, 2006
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    SkyAce2004 New Member

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    They are quite pricey. Ive got an Innovate Motorsports setup. I even set and tune the gauge from my laptop. However, all useless stuff now.
    SkyAce2004, Aug 1, 2006
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    Salty_Dog Old Fart

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    Where can I get one?
    Salty_Dog, Feb 21, 2008
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    GSE21tuner Formerly rollatuner110. Representing AZLexus.club

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    You can just go with Split Second PnP tuning. If you have modifications, they can take those into consideration to map you the best tune possible for the most power.
    GSE21tuner, Feb 21, 2008
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