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This is a discussion on blitz dual turbo timer within the Cockpit and Cabin forums, part of the Tutorials & DIY category; Originally posted by KurleeDaddeeWRX I would also like to know how to read the boost on this TT. What does ...

  1. #16
    Registered User klancek's Avatar
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    Mar 2002
    New Haven, CT
    Originally posted by KurleeDaddeeWRX
    I would also like to know how to read the boost on this TT. What does hkpa mean. I need to know how to convert hkPa to psi. And how does that refer to boost?
    I think the Pa is the metric unit for pressure (Pascal, old dead dude). But the "hk" part is interesting. ..looks like "hecto kilo" (aka hundred thousand) a combo of metric prefixes. (there's no standard nomeclature, but most countries do combos, so try not to blame them!) According to here and here there are 6.895 kPa per psi. So 15 psi = 103 kPa = 1.03 hkPa. Considering the photos of the LED on the blitz webpage, this looks reasonable, but who the heck runs at 33 psi? (this is what you get after converting 2.30 hkPa "peak" warning as pictured on their website.) ...Well for all I know, maybe race cars do; this turbo stuff is still new to me.

    ..anyway, looks like, unless you wanna go metric, you'll have to carry a calculator in the glove compartment. Or maybe you can mount one in-dash. How fast can you divide by .07?

    By the way, I can answer my earlier question about the DTT: according to OptAuto it does have an auto timer setting, based on turbo use and engine run time.
    Last edited by klancek; 04-11-2002 at 08:17 AM.

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  3. #17
    Moderating U! KurleeDaddeeWRX's Avatar
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    Mar 2002
    San Jose, CA
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    I made a table for you guys for this formula to convert hkPa into PSI. The engineer I work with helped me out on this one. You know engineers and books.

    14 0.966
    14.25 0.98325
    14.5 1.0005
    14.75 1.01775
    15 1.035
    15.25 1.05225
    15.5 1.0695
    15.75 1.08675
    16 1.104
    16.25 1.12125
    16.5 1.1385
    16.75 1.15575
    17 1.173
    17.25 1.19025
    17.5 1.2075
    17.75 1.22475
    18 1.242
    18.25 1.25925
    18.5 1.2765
    18.75 1.29375
    19 1.311
    19.25 1.32825
    19.5 1.3455
    19.75 1.36275
    20 1.38

    Hope this helps.
    Kurlee Daddee

  4. #18
    Registered User klancek's Avatar
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    Mar 2002
    New Haven, CT
    ..just a thought.. maybe it can show pressure in psi. Could be something as simple as a setting. May be prudent to PM someone who's got one.

    Antman: I hate this answer whenever I get it, but did you try a search on i-club? I know you're in Australia, but there's a lot of STi gear-heads over here. On i-club I even found a pic of a FATT install almost flush right by a guy who went nuts with a Dremel tool (exactly like I was wondering about!). Doesn't look as good as prey747's job, tho. Best of luck..
    Last edited by klancek; 04-12-2002 at 04:22 PM.

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  6. #19
    Registered User ticrab's Avatar
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    Aug 2001
    Fresno, CA
    I had mine installed a while back. And I don't think there is an easter egg thing on this TT to switch to PSI. It was annoying at first but I ended up going with this for while and now I'm use to it. I know 1.17 would be my warning setting on my TT and it would go off everytime I reach or be over 17psi. I turned down my MBC a bit to keep the pressure under 1.12 since then.

    I also added my little table in an Excel format...
    WRX by Nature

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