Disi-MZResponse

Discussion in 'Mazdaspeed 3 Build Diaries' started by Enki, Feb 10, 2016.

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  1. Enki

    Enki Motorhead Platinum Member

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    @aaronc7

    Might have figured out the boost issue; I think I might have done the math wrong for the additive...
    MAPv * Base * Second + Additive is the right way to go, whereas I *might* have been subtracting the additive (double subtraction).

    If this is accurate, I'm off by about 25 KPA across the entire curve... Correcting for that in the log makes it look like this:
    3rd gear.jpg

    A whopping 6 PSI sees 3.8v @ 8k RPM...I don't think I'll need more than a stock MAP sensor to max the turbo after all.
     
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  2. aaronc7

    aaronc7 Gold Member

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    I considered that as a possibility, but a 25 kPa difference didn't seem to make it right either. You had about about 50 KOEO right? That's brings it up to 75.... But not close to the 90 you should be seeing. I forget the exact details of what you saw but does that sound right?
     
    aaronc7, via a mobile device, May 29, 2019
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  3. Enki

    Enki Motorhead Platinum Member

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    The additive probably still needs work, but running it as a double subtraction makes it positive so I'm reasonably sure that's what the issue is. I'll find out here in a bit.
    [doublepost=1559183044][/doublepost]Some notes:
    1. It doesn't like being below 2500 RPM. No nuts, hard to even cruise below that.
    2. The rear view mirror is useless at all RPMs, but it's consistently so; looks like the engine is perfectly balanced and there's no resonance available to even begin to cancel out the vibes.
    3. ....I might be over timing already, even though I'm only targeting 16 degrees @ 8k...

    On to the shitshow:
    3rd.jpg


    That falloff is why I think I'm over timing. Have a peek at the Load, MAFv, Timing and HP curves:
    Curves.PNG


    Oh yeah, then there's this:
     
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  4. Sho

    Sho Silver Member

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    a9dN4e1_700b.jpg
     
    Sho, via a mobile device, May 30, 2019
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  5. CMajor

    CMajor Gold Member

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    Wow I'm sorry I'm late to the party but I guess better late than never. Looks like you got your fuel stuff sorted out. Either way this is what I have running in my car. http://www.radiumauto.com/Fuel-Pump-Hanger-EVO-X-P974.aspx

    I've had to modify it slightly to make it work and still ironing out some kinks but I think it will be a solid choice for fueling when I'm done with the testing.
     
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  6. Sho

    Sho Silver Member

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    Keep in mind the pu basket doesn't have a thread on top like the gen 1. So sealing that evo x in the tank will take some creativity
     
    Sho, via a mobile device, May 30, 2019
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  7. Enki

    Enki Motorhead Platinum Member

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    Lol I don't have plans to use something so overkill. I should be able to get to 450-500 no problem with what I have now.
     
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  8. Enki

    Enki Motorhead Platinum Member

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    New shoes:
    IMG_20190531_153138205_HDR.jpg

    Tomorrow:
    EBCS connected
    Stock MAP sensor installed
    New shoes fitted
    Maybe car wash if there's time (there almost certainly won't be).
     
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  9. Mauro_Penguin

    Mauro_Penguin Punk in Drublic Motorhead Platinum Member

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    Finally had time to watch your video.

    100mph at 8k rpm's in 3rd gear, that's friggin awesome!!!
     
    Mauro_Penguin, via a mobile device, May 31, 2019
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  10. Enki

    Enki Motorhead Platinum Member

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    Bit more in it when it's all broke in. Eventually I need to check timing chain tension, as that's a concern right now (new stock chain).
     
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  11. Enki

    Enki Motorhead Platinum Member

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    *Sigh*
    Map sensor works properly now. Apparently the tables are for the ECU, and for viewing/logging you have to add the absolute mani pressure pid and set it to use the 3.5 bar sensor in the config for the PID for boost and shit to read properly, then you can remove it.

    Now fluctuates between 0 and -0.02 PSI KOEO.
     
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  12. SharksInSpace

    SharksInSpace Planets and shit. Silver Member

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    I tollllldd you that in Shout, my dude! Keep an eye on it whenever you restart VT; mine has a glitch where it usually resets that monitor to stock MAP.
     
  13. Enki

    Enki Motorhead Platinum Member

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    You said to do that to boost, where that option isn't.
     
  14. JohnnyTightlips

    JohnnyTightlips Platinum Member

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    Mine doesn't need to be changed every time but yeah you also have to change it on the logging dashboard.
     
    JohnnyTightlips, via a mobile device, May 31, 2019
  15. SharksInSpace

    SharksInSpace Planets and shit. Silver Member

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    I wasn't specific about which PID you set it on, just that you configure it through the Dashboard tab.
     
  16. Enki

    Enki Motorhead Platinum Member

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    Yeah well whatever. Tires, fuel access cover, and EBCS hookup tomorrow at a minimum.
     
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  17. Everton992000

    Everton992000 Greenie Member

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    Let me just say that I've been following this from the beginning and I'm so excited to see the progress coming in steadily again.

    Sent from my SM-N960U using Tapatalk
     
    Everton992000, via a mobile device, May 31, 2019
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  18. Enki

    Enki Motorhead Platinum Member

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    Whisper that, softly, into my ear.

    Kthx
     
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  19. Enki

    Enki Motorhead Platinum Member

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    Tires - Check
    EBCS - Check
    RSB links - Checked


    New list (in order of importance / timeframe):
    Sunshade
    Full wash and detail
    Reinstall TMIC duct scoops (if I still have them)
    Coolant fittings for turbo (need to reroute before it cooks)
    Lightweight shift knob
    New 360 dash camera and seat mount
    Headlight braces
    Meth parts
    6th port

    Oh and 15 deg VVT seems to have pepped it up a bit.
     
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  20. SharksInSpace

    SharksInSpace Planets and shit. Silver Member

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    In case you don't have your tmic ducts, @deldran should have a garbage bag full of that shit from when I sold him my juan....unless he trashed it all.
     
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