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Thread: custom operating system nos

  1. #1
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    Default custom operating system nos

    looking for information on nos part of custom operating systems cant seem to find it like how it does fuel inrichment and timing retard

  2. #2
    Lifetime Member TAQuickness's Avatar
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    COS5 is the OS you want for n2o. You might send a PM to Black02SS or Beer99C5 for help setting it up.


  3. #3
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    Default pm box full

    tryed Black02SS pms are full

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    Tuning in.. Please post anything you find out, I'm pretty interested in this.
    1999 RCSB: P1SC, 57lb inj, E-fans/34\" rad, 3:73-Eaton 18\" Toyo\'s, Flashscan-FJO, Griffin IC, FLP level 5 and PI 10.5\" 3-disk....

  5. #5
    Lifetime Member Doc's Avatar
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    Here you go gents. This is the shiznit! Don't settle for any immitations, this is the real thing baby!
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

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    2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
    98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
    V1 V2 99+up RR COS #5 OLSD Dual Stg N20
    www.efialchemy.com
    www.greatamericancarwar.com

  6. #6
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    Is that really all there is to it? Pretty sweet!! So whenever the pin is grounded, those conditions are met? How is your nitrous system set up? What do all those switches across the top do?
    1999 RCSB: P1SC, 57lb inj, E-fans/34\" rad, 3:73-Eaton 18\" Toyo\'s, Flashscan-FJO, Griffin IC, FLP level 5 and PI 10.5\" 3-disk....

  7. #7
    Lifetime Member Beer99C5's Avatar
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    I am still setting mine up, Doc I did not know you were running it to. I just reviewed the tables TAQ helped me switch from my 99 OS to a 2002 Vette OS and will be loading it next week.

    Here is what I am planning.

    Two stage, 100 Dry, 100 Wet, either will work with the NA Tables as single stage.

    When i want to go with the 200, both stages will be activated, I will use the nitrous tables in COS5 by flipping a toggle in my console.

    Not my final tables but screens of what you can tweak.









    PCM Red connector


    Last edited by Beer99C5; March 11th, 2007 at 05:57 PM.
    1999 C5 A-4 Convertible
    1 of 245 Nassua Blue 99 Vert's, Blackwing, LS6 Intake, 42 # Injectors, Two Stage Nitrous System- Dry and a Wet Plate, EFI Live Scan/Tune V2, 1999 PCM with 2002 COS 5 OS Custom Nitrous Panel.


    Maine USA



  8. #8
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    When does that iat ve multiplier come into play? Is that only when the pin is grounded, or is that constant?
    1999 RCSB: P1SC, 57lb inj, E-fans/34\" rad, 3:73-Eaton 18\" Toyo\'s, Flashscan-FJO, Griffin IC, FLP level 5 and PI 10.5\" 3-disk....

  9. #9
    Lifetime Member Doc's Avatar
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    Sorry about the poor picture. The foglamp switches are as follows left to right. 1) Fog 2) N20 Heater 3) N20 Master Arm & Stage I
    4) N20 Stage II . #3 is wired up thru a double pull, double throw relay that provides 12vdc to the WOT switch/relay and the ground for pin 56 to utilize the COS #5 N2O settings.

    2000 Silverado Full Size 4x4: Forged 6.2, H/C F1R Procharger
    98A4 Z28: 02 PCM H/C Forged 347, 9" Moser 3.73
    V1 V2 99+up RR COS #5 OLSD Dual Stg N20
    www.efialchemy.com
    www.greatamericancarwar.com

  10. #10
    Junior Member Macon@MMP's Avatar
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    I'll say two things - I can't tune with COS5 yet - I know someone who can and it works real well. I have never run so consistently at the track as I have run with a Nitrous Outlet single stage 200, FJO Mini Controller adjusted for the various (and few) tracks I run and a COS5 tune that makes it all come together like never before! Anyway - at least I own all the software and study it endlessly!! Example times form a month ago 10.52, 10,58, 10.53, 10.55 are sample times I ran with the streety version of my car. It's pulled completely apart as it's being retired from School Bus duty and getting a new 2 stage nitrous system. I'm heavily considering a wet first stage for 150 out the hole and then a DP Dry 250-350 kit to pick up at the second gear shift and carrying me through the timers. Now COS5 seems like the real deal for this - what do i need to consider for the Dry DP??

    Now - I may have to start a new thread like my LS1tech
    Macon Patton

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