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  1. Thread: Custom OS#5

    by diynoob
    Replies
    354
    Views
    371,977

    Sticky: From what I've gathered, there are only two...

    From what I've gathered, there are only two different versions of COS5 -- one for US spec cars and one for AUS spec cars (did I get that right?) The one for US spec cars is a direct upgrade for a...
  2. Thread: Custom OS#5

    by diynoob
    Replies
    354
    Views
    371,977

    Sticky: Anyone have the P/N for the little gasket that...

    Anyone have the P/N for the little gasket that goes on the MAP sensor and keeps it firmly in place on the back of the intake? I noticed the gasket on my old MAP sensor was torn in a couple of places...
  3. Thread: Custom OS#5

    by diynoob
    Replies
    354
    Views
    371,977

    Sticky: Just down-converted from my 2003 OS to the 2002...

    Just down-converted from my 2003 OS to the 2002 OS 12212156. The car drives just fine. It's also one of the most beautiful days we've had here in Southwest Florida for a LONG time (cool and breezy...
  4. Thread: Custom OS#5

    by diynoob
    Replies
    354
    Views
    371,977

    Sticky: Thank you joecar! I was thinking along those...

    Thank you joecar! I was thinking along those lines but didn't know the specifics of the upgrade path. Got all my tables copied over tonight (I think...) which was not difficult but sure was...
  5. Thread: Custom OS#5

    by diynoob
    Replies
    354
    Views
    371,977

    Sticky: Thanks, I am not sure what the difference is...

    Thanks,

    I am not sure what the difference is between 02020005 and the other 0005 OS file. Any advice on which to use is appreciated. This is going on a 2003 Z06.

    :cheers:
  6. Thread: Custom OS#5

    by diynoob
    Replies
    354
    Views
    371,977

    Sticky: My PCM is currently running 12593358 -- I am...

    My PCM is currently running 12593358 -- I am trying to find COS5 for this setup. From the old COS3 tutorial it looks like I need 02040005 but I couldn't find that OS anywhere.

    Am I correct in...
  7. Replies
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    14,196

    Earl, I'm putting COS5/2bar on my car ASAP. ...

    Earl,

    I'm putting COS5/2bar on my car ASAP. Just reading a little more before taking the plunge. 2bar sensor is sitting here in front of me so it's really just a matter of me finding the right...
  8. Replies
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    4,095

    Boost pressure input and logging

    How is everyone logging boost pressure? I am running 13-14psi at the moment on the OEM OS in my Z06 and I don't have a 2 or 3 bar sensor anywhere on the car. Since it's a turbo app, I need to log...
  9. Replies
    4
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    3,892

    Good info, thanks :cheers:

    Good info, thanks :cheers:
  10. Replies
    4
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    3,892

    2 bar -- tell me your experience

    Well, I am a big fan of SD -- I can AutoVE my way to near perfect drivability with the MAF off, but when I reenable the MAF and try to calibrate it properly I end up with odd drivability problems I...
  11. Replies
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    9,433

    Log file attached to this message. Some BENs in...

    Log file attached to this message. Some BENs in the MAF curve are a bit high or low -- but everything around them makes sense and is close. So I didn't tweak just one cell in the MAF table down...
  12. Replies
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    9,433

    BTW -- anyone know for sure if the MAF will be...

    BTW -- anyone know for sure if the MAF will be considered "failed" if it goes below the minimum frequency, but is under the min engine speed?

    I'd like to fail the MAF under 5000Hz but not set a...
  13. Replies
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    9,433

    I didn't save any logs while I was doing the MAF...

    I didn't save any logs while I was doing the MAF tuning, I ejected the data after each paste and multiply.

    Just let me know which PIDs your cleanup filter needs though, and I'll log the car on the...
  14. Replies
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    9,433

    Well, I did about 2 hours of driving, logging,...

    Well, I did about 2 hours of driving, logging, and tuning tonight. I have *most* of my MAF table clean, BUT... I am running into a couple of issues.

    The worst one is that whereas my car would...
  15. Replies
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    10,138

    I did see some very, very short pulses, but the...

    I did see some very, very short pulses, but the average was roughly the same. I too questioned whether or not my changes had any real effect, but the change in drivability was noticable.

    Is it...
  16. Replies
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    10,138

    I left my short pulse setting to 4ms, because it...

    I left my short pulse setting to 4ms, because it appeared that the real magic happened inside of default and minimum pulsewidth tables. Or did I misread something?

    I dropped the default and...
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    This is great info -- I am learning so much here....

    This is great info -- I am learning so much here.

    I guess I'll stick it out and take a few more cruises with the MAF on to try to get it in line. It's just mentally unrewarding to spend a lot of...
  18. Replies
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    10,138

    Howard, it's funny you bring up that information...

    Howard, it's funny you bring up that information -- I too, wondered what the significance was in the last few weeks as I've looked at my injector tables, and also "think" it should be accounted for...
  19. Replies
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    Why is the MAF so innaccurate?

    Why is it that when you get your VE in line and then reenable the MAF that it needs so much work to get the MAF table in line? I mean, assuming you don't have a vacuum leak somewhere behind the MAF,...
  20. Thread: COS idea

    by diynoob
    Replies
    13
    Views
    7,632

    As of right now, I don't think there's a way to...

    As of right now, I don't think there's a way to make the LSx PCM aware of fuel pressure in a way that would affect the tune (intentionally). The PCM can auto tune itself around fuel pressure changes...
  21. Thread: COS idea

    by diynoob
    Replies
    13
    Views
    7,632

    Tordne, you bring up a great point, and one not...

    Tordne, you bring up a great point, and one not contemplated within my original hairbrain idea. If there were a single 2D fuel pressure vs. IFR multiplier table, that would take care of the broad...
  22. Thread: COS idea

    by diynoob
    Replies
    13
    Views
    7,632

    COS idea

    I'm sure this has been discussed before...

    While doing my VE tuning, I've noticed that even after the car is warmed up (180 ECT), the car is not "fully" warmed up. I have an 03 Z06 with the GM...
  23. Replies
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    23,392

    The car was still warm when I started it, so I...

    The car was still warm when I started it, so I only got two cells of DYNAIR -- but both of them consistently showed 1.5ish lbs/min for a while after startup. Since I only had the hottest two cells I...
  24. Replies
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    23,392

    Sweet, going out to try this now. :cheers:

    Sweet, going out to try this now.

    :cheers:
  25. Replies
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    6,501

    VERY cool! Thanks! I noticed that the V2 unit...

    VERY cool! Thanks!

    I noticed that the V2 unit supports more inputs -- this is awesome, and would allow me to eventually start logging boost and fuel pressure in addition to AFR, which I already...
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