New to forum -deciding to buy

[SW1911]

ok im in , i want to make sure about the pcm issue like , can i use any 411 on 2001=2003 s10 or silverado and be ok with the os not matching , this would be the kicker

Thanks to every one

Jim

[Taz]

I'm not 100% certain what you are asking ... so my apologies in advance if I fail to answer your actual question.

The 0411 (12200411) LS1-B PCM, while technically obsolete, is very user friendly. It was used in many 2001 and 2002 model year vehicles, and can be used as a replacement for the 09354896 LS1-B PCM used in the 1999 and 2000 model years.

EFILive licenses the PCM - not the VIN, not the OS, just the PCM. Once you license the PCM you are free to flash any compatible calibration (OS), and you can change the VIN in the PCM to match the vehicle of use.

For a custom application (engine conversion / Hot Rod) where the VIN in the PCM needs to correspond to the vehicle VIN, EFILive will provide you with the functionality to do all of these things. The main competitor (HPT) cannot assist with such conversions, outside of a very narrow margin, or at an outrageous cost.

Hope that answers your question ...

[SW1911]

Thanks TAZ , you did answer my question hpt is killing me in credits , i mainly do 2001 -2003 4,3 and i cant use lets say an astro van ecm unless i license it and even then the os and vin dont match so it cost me alot of-money to do a pcm fora s1fo ,i want to make sure i can do this without buying specific pcm;s (s10 or blazer )

Thanks for the response , i love this forum its soooo much more friendly
Jim

[SW1911]

tool in hand , i cant find any custom o/s for the 4.3 and this tool is new and weird ad the ve tables are inverted ? any help on this one

[5.7ute]

The VE table inversion is just Efilive's method of displaying the data. It will take a bit of getting used to, but is much better IMHO. What is the base operating system ID that you normally use?

[SW1911]

mostly 1271012 but there a few more all silverado and s10 specific 4.3 im ruuning a 1 bar SD right now and have a two bar built in hpt

[Taz]

mostly 1271012 but there a few more all silverado and s10 specific 4.3 im ruuning a 1 bar SD right now and have a two bar built in hpt

OS 1271012 in an HPT COS. It corresponds to OEM OS 12208322 (common to the 2001 model year). In EFILive the corresponding COS options are 01270001 (1 BAR SD), 01270002 (1 BAR SD plus Valet Option), and 01270003 (2 & 3 BAR SD with additional enhancements - but still works with 1 BAR applications).

The COS upgrade option in EFILive is at no additional cost to you - but the process is slightly different than HPT. In the tuning software (V7.5) under the "Help" menu select "Tutorials", the select "Custom OS Upgrade Tutorial - LS1.pdf". I would recommend that you print this document, read it several times and make some notes, and then keep it nearby when you do this for the first time. Once you have done this once or twice, it becomes very easy.

The COS files themselves should be located on your computer at C:\Documents\My Documents\EFILive\V7.5\Bins\Custom OS.

[SW1911]

OS 1271012 in an HPT COS. It corresponds to OEM OS 12208322 (common to the 2001 model year). In EFILive the corresponding COS options are 01270001 (1 BAR SD), 01270002 (1 BAR SD plus Valet Option), and 01270003 (2 & 3 BAR SD with additional enhancements - but still works with 1 BAR applications).

The COS upgrade option in EFILive is at no additional cost to you - but the process is slightly different than HPT. In the tuning software (V7.5) under the "Help" menu select "Tutorials", the select "Custom OS Upgrade Tutorial - LS1.pdf". I would recommend that you print this document, read it several times and make some notes, and then keep it nearby when you do this for the first time. Once you have done this once or twice, it becomes very easy.

The COS files themselves should be located on your computer at C:\Documents\My Documents\EFILive\V7.5\Bins\Custom OS.

Damn Taz I have to say thanks ,and im really exited to be somewhere there is help, Just that part of it makes me happy with my purchase , somewhere while bucking up on reading I found a os swap file and cant find it again all in all I did pull a file from a pcm in my office and could not read it , I found out I was on version 8 so i switched up , pulled the file and went lurking around a found that EFI software is very different but easier to use for a beginner , I only have 5 tunes I sell and only make minor changes as needed and the easy stuff like maf tunes at the shop and Im no Pro but always learning , I may invest in RR just to tighten up my 5 files a bit Thanks again

Jim

[ScarabEpic22]

Once you get into the swing of things, start using V8 to read/write your PCMs. It is faster and the routines are more robust than V7.5.

If I were you, I'd move away from the 01 OS and use the 02 OS 12212156 so you can use COS5.

[SW1911]

Two questions , I have read the tutorial in custom o/s several times and am having trouble but I have learned alot on other ends ,,,,, Do I need to license the file first before i can apply the o/s because I cant see them at all ( dont want to waste credits ) second I have a boatload of stock 2001 up v6 files and would like to contribute if there is a place to upload them !!!!

Thanks again Jim
ps please let me know if I should start a new thread or keep it here for now , I dont want to offend anyone

and thanks Scarabepic22 v8 is faster and to everyone else for making this a smooth transition