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Thread: Grafton's 07 STi

  1. #61
    SLi Lurker Zangado1's Avatar
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    What an awesome journey your post has taken. Love your detailed pictures as well. Without a doubt the best year / color and model STI.
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  2. #62
    SLi Supporter Grafton's Avatar
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    ^ Thanks

    I've pulled the CAI off the car and gone back to the short ram, every time it rained it would throw a code for the maf voltage, requiring a ecu reset to clear. It'll go back on in the summer, the 4degree above ambient is too good to miss out on.

    Finally got a wide band so that I can monitor the car better and dial the OTS tune in with the intake:




    I've got the 5V out wired into the analog input from the rear O2 sensor so I can log the wideband without needing a laptop and serial cable hooked up.


    Then the multi disk changer died, and I took it apart to attempt to get the disks out and while it was apart I did a color change on the buttons:



    Finally got a turbo blanket from PTP and got around to installing it:




    This is the craziest thing, I left the garage after installing it and did several pulls and quickly pulled back into the garage and was able to touch the turbo heat shield without burning myself.
    2007 Impreza WRX STi
    2012 Impreza 2.0i Premium CVT
    Sold 1997 Legacy L Sedan, 2.5L 12:1 Compression Hybrid, The 'Lego'
    RIP - 2005 LL Bean Outback, The 'Bean' & 1999 Impreza Outback Sport

  3. #63
    SLi Supporter Grafton's Avatar
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    Finally getting close to a Protune, so time to make sure the fuel system can handle it

    ID1000's


    DW300


    Install time
    fuel pump was straight forward, but the supplied wires from DW were a smaller gauge than the stock wires


    Assembled pump assembly


    new vs old injectors:


    using the data from Injector Dynamics until a protune in October, wide band was happy during a pull and looks good in closed loop.

    Moved the AOS to make some more room for a GR intercooler that's waiting to be installed
    GR vs GD intercooler:



    Before AOS move:


    after the IAG rotated turbo / Big intercooler bracket:


    GR intercooler bracket is here:


    I didn't feel like trying to fight with the lower end of the bracket where it would bolt to the TGV's


    GR intercooler installed


    Spliter fitment:



    Going to have to do some work on the spliter to get the most out of the bigger intercooler.
    2007 Impreza WRX STi
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    Sold 1997 Legacy L Sedan, 2.5L 12:1 Compression Hybrid, The 'Lego'
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  4. #64
    SLi Supporter Grafton's Avatar
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    Friend of mine picked up a NA long block, and gave me a light weight pulley that was on it





    Finally got the inter-cooler stencil,
    prepped the engine bay


    Stencil applied


    Painting, 3 coats of high temp red caliper paint


    End result:



    Going on the rollers at EFI Logics this Saturday!
    2007 Impreza WRX STi
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    Sold 1997 Legacy L Sedan, 2.5L 12:1 Compression Hybrid, The 'Lego'
    RIP - 2005 LL Bean Outback, The 'Bean' & 1999 Impreza Outback Sport

  5. #65
    SLi Supporter Grafton's Avatar
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    The big day finally came, got the car up to EFI Logics for a protune by Calvin Dotson of Dotson Tuning.

    Got the car all strapped down


    baseline pull:


    Results


    Before Protune
    265 WHP & 284 WTRQ with some knock in the high rpms
    After
    275 WHP (+10) & 313 WTRQ (+29)
    Knock free and stable AFR

    I've very happy with the way the car is running, much more stable than the bro-tune I had done to get the car "ok" with all the mods it had done.
    Last edited by Grafton; 10-16-2017 at 01:47 AM.
    2007 Impreza WRX STi
    2012 Impreza 2.0i Premium CVT
    Sold 1997 Legacy L Sedan, 2.5L 12:1 Compression Hybrid, The 'Lego'
    RIP - 2005 LL Bean Outback, The 'Bean' & 1999 Impreza Outback Sport

  6. #66
    "Proby" Go Mifune's Avatar
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    People say that Mustangs read low so you might have even more power. Good work!
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  7. #67
    Administrator Huffer's Avatar
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    Great thread. Thanks buddy!
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  8. #68
    SLi Supporter Grafton's Avatar
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    Quote Originally Posted by Go Mifune View Post
    People say that Mustangs read low so you might have even more power. Good work!
    I was happy stock, happier when I went stage 2, but the protune is awesome. I wish I'd have done it sooner

    Quote Originally Posted by Huffer View Post
    Great thread. Thanks buddy!
    2007 Impreza WRX STi
    2012 Impreza 2.0i Premium CVT
    Sold 1997 Legacy L Sedan, 2.5L 12:1 Compression Hybrid, The 'Lego'
    RIP - 2005 LL Bean Outback, The 'Bean' & 1999 Impreza Outback Sport

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