Little off topic here but can you write a cax file for the 12212156 OS on the 411 Pcm's for 2 bar or 3 bar Support??? Or could you modify the COS5 to support the flex fuel option???Originally Posted by Highlander
The 411's had flex fuel capability with 12212156 OS with the L59 engine option but there is no COS for that OS with support from EFI live.
I have been told the only option is to Use HPT with a COS to get 3 bar support or upgrade to a 1 MB PCM/ECU
12212156 has COS3/02020003 and COS5/02020005 as COS upgrades (which support boost)... did you mean an OS other than 12212156...?
Does it support the flex fuel sensor? L59 application?
Not sure where you found this information ... but much of it is incorrect.
The 2002 L59 5.3L Flex Fuel engine did use the 12200411 PCM, but these did not use OS12212156.
HPT does not offer a 3-bar COS for the Flex Fuel OS - they do offer a 2-bar COS.
The 2002 L59 5.3L Flex Fuel engines used OS12216125.
The more common OS12212156 used on many 2002 platforms, does not appear to readily support a Flex Fuel sensor - as a new portion of code was added to OS12216125, that did not exist in OS12212156.
Using a 1Mb PCM and a 2003 or 2004 OS is a much easier path - to a Flex Fuel compatible COS.
You are right. I was posting off my Phone earlier and Typed the wrong OS in.
OS 12216125 L59 application for 2002 with Flex fuel sensor.
2002 Chevy Tahoe 4x4 L59 5.3L (PCM 12216125).tun
2002 GMC Yukon 2WD L59 5.3L (PCM 12216125).tun
I, as well as others, would like to see these support boost on the 12200411 PCM!!!
It would be cheaper and easier to flash a calibration than it would be re-wire a 99-02 truck just to run a 1 MB PCM.
I am sure the 98-02 F body guys would be all over it too, as well as guys with Hot rods using the 411 PCM's as a base set up.
I was told by the cool kids that HPT has a COS that supports this.
The odds of EFILive investing the resources to create a new Custom Operating System (COS) for an obsolete controller are pretty much zero.
There are many people patiently waiting for support for other controllers that are currently in production.
The wiring harness re-pin necessary to convert from a 512Kb LS1-B PCM to 1Mb LS1-B PCM is minimal.
The people who convert their 1995 to 1999 Gen I Vortec trucks from a Vortec PCM (Black Box) to a 512Kb LS1-B PCM have to move every pin from one controller to the next controller - and this larger task still only takes a few hours.
If you can get by with a 2-Bar COS, then HPT might be the path of least effort.
If you actually need a 3-Bar COS, then you are right back to the 1Mb PCM with either software.
Unless you already own HPT, the most cost effect solution is to roll up your sleeves and install the 1Mb PCM.
Last edited by Taz; November 28th, 2014 at 03:57 PM. Reason: - typo
You could also scale the VE/MAF/IFR (and spark and other other) tables to run boost (requires some work, but then nothing is ever easy/cheap)...
where to get efilive?
so i decided to get efilive after all.
i want to get it from a dealer/tuner including a "base tune" and want to get lambda/fuel pressure/bosst gauges and sensors and bungs incl. plugs etc. all at the same time.
iv had no luck so far. two mails to the dealer in england remain unanswered. i contacted a corvette tuner in the us. he answered my mail but never got back with a quote. i contacted another one, never got a quote either.
so any advice where to get efilive and the stuff mentioned above?
Call mike@ vengeance
14046068434
Last edited by Highlander; December 6th, 2014 at 05:31 AM.
"All that is needed for the triumph of evil is that good men do nothing..."
would you have an email address?
vengeance racing? probably not.
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