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Thread: RR problems

  1. #21
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    Just an FYI..

    Paul sent me a patch that seems to have fixed things for the moment. However, Paul and Craig are discussing features to make the option of 512K or 1MB much easier and smoother to use.

    Cheers to both of you guys! Glad I chose EFI Live

  2. #22
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    Good to know, then anyone would only ever have to buy a 1MB PCM and it would work on any LS1 car/truck/suv from 99-08!
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  3. #23
    Lifetime Member mr.prick's Avatar
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    The 1mb PCM is pinned differently than the 516k.
    I don't suggest trying to use a 1mb PCM with a vehicle meant for a 516k unless you re-pin the harness.
    IIRC the pins are similar except for the coils, which could cause a problem.

    The OP has an RR with a serial number the is meant for a 1mb but is installed in a 516k.
    That is why he couldn't use the OS.
    This check that EFILive does can save you from yourself.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  4. #24
    Lifetime Member N0DIH's Avatar
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    Nope, they are "essentially" the same. The pin that is different is a don't care pin, so all the address lines are the same.

    Not sure if I can post the datasheet, that is sorta "my realm", I dug into it quite a bit.

    Maybe I can post picts of the 2 pinouts. But yes, the RR works on both.



    Quote Originally Posted by mr.prick View Post
    The 1mb PCM is pinned differently than the 516k.
    I don't suggest trying to use a 1mb PCM with a vehicle meant for a 516k unless you re-pin the harness.
    IIRC the pins are similar except for the coils, which could cause a problem.

    The OP has an RR with a serial number the is meant for a 1mb but is installed in a 516k.
    That is why he couldn't use the OS.
    This check that EFILive does can save you from yourself.
    I owned a Ford once, ONCE.......

  5. #25
    Lifetime Member mr.prick's Avatar
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    The RR will work in either yes but the PCM it is installed in won't work right if the harness isn't re-pinned.
    From the diagrams I have:
    Blue C1
    28 - HO2S Low Signal Bank 1 Sensor 2
    29 - HO2S Low Signal Bank 1 Sensor 1
    Red C2
    52 - Generator Field Duty Cycle Signal [F Terminal]
    53 - Ignition Retard Signal [EBCM] C1 Pin 19
    72 - Not Used
    74 - Not Used
    Green C2
    52 - H02S Heater Low Control Bank 1 Sensor 2
    53 - H02S Heater Low Control Bank 2 Sensor 2
    72 - 02S Heater Low Control Bank 1 Sensor 1
    74 - 02S Heater Low Control Bank 2 Sensor 1
    I was wrong about the coils not matching but the O2's do not.
    I have also heard a rumor that only the '04 PCM has IAC drivers tho.

    From the diagrams I have it does not seem to be a simple plug and play swap from a 516k to a 1mb
    I'd be interested to see your diagrams for the 516K
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    Last edited by mr.prick; May 1st, 2010 at 11:48 AM.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  6. #26
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    Quote Originally Posted by mr.prick View Post
    The 1mb PCM is pinned differently than the 516k.
    I don't suggest trying to use a 1mb PCM with a vehicle meant for a 516k unless you re-pin the harness.
    IIRC the pins are similar except for the coils, which could cause a problem.

    The OP has an RR with a serial number the is meant for a 1mb but is installed in a 516k.
    That is why he couldn't use the OS.
    This check that EFILive does can save you from yourself.
    Quote Originally Posted by N0DIH View Post
    Nope, they are "essentially" the same. The pin that is different is a don't care pin, so all the address lines are the same.

    Not sure if I can post the datasheet, that is sorta "my realm", I dug into it quite a bit.

    Maybe I can post picts of the 2 pinouts. But yes, the RR works on both.
    Quote Originally Posted by mr.prick View Post
    The RR will work an either yes but from the diagrams I have:
    Red C2
    52 - Generator Field Duty Cycle Signal [F Terminal]
    53 - Ignition Retard Signal [EBCM] C1 Pin 19
    72 - Not Used
    74 - Not Used
    Green C2
    52 - H02S Heater Low Control Bank 1 Sensor 2
    53 - H02S Heater Low Control Bank 2 Sensor 2
    72 - 02S Heater Low Control Bank 1 Sensor 1
    74 - 02S Heater Low Control Bank 2 Sensor 1
    I was wrong about the coils not matching but the O2's are not.
    I have also heard a rumor that only the '04 PCM has IAC drivers tho.

    I'd be interested to see your diagrams for the 516K

    I should have been clearer, I meant you could buy a 1MB RR and flash either a 512kb or 1MB tune in. You cant simply use a 1MB OS on a 512kb car as the wiring is indeed different, but since the pinouts are determined by the OS, using a different one will reroute the pins properly.

    What we are figuring out here is that a 1MB RR will accept either a 512kb or 1MB flash, yes officially its not supposed to work (you will probably brick a 1MB PCM flashing a 512kb OS into it, but EFILive wont let you anyway) but it does.
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  7. #27
    Lifetime Member mr.prick's Avatar
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    Quote Originally Posted by ScarabEpic22 View Post
    I should have been clearer, I meant you could buy a 1MB RR and flash either a 512kb or 1MB tune in. You cant simply use a 1MB OS on a 512kb car as the wiring is indeed different, but since the pinouts are determined by the OS, using a different one will reroute the pins properly.

    What we are figuring out here is that a 1MB RR will accept either a 512kb or 1MB flash, yes officially its not supposed to work (you will probably brick a 1MB PCM flashing a 512kb OS into it, but EFILive wont let you anyway) but it does.
    There is not a 1mb and 516k RR, it is the PCM it is installed in that determines whether it is 1mb or 516k.
    That is was my point.
    512k RoadRunner Firmware 12.14R
    FlashScan V2 Bootblock V2.07.04 Firmware V2.07.22 EFILive V7.5.7 (Build 191) V8.2.1 (Build 181)
    LC-1 WBO2

    _________________________________________________

  8. #28
    Lifetime Member N0DIH's Avatar
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    Exactly, usually the question is putting the RR in place of a 28F400 or 28F800 memory, I didn't realize the discussion was the PCM itself. Gotcha.

    I haven't crossed it yet, but I am planning an 0411 swap soon, but was wondering about using the 03-up truck PCM's instead (I have one set for a RR already).

    I suspect that a 512k PCM can be a 1Mb, but the offset of the code that is put in it and the OS is what matters. With a RR you can test it safely without "bricking" a good PCM.

    Quote Originally Posted by mr.prick View Post
    There is not a 1mb and 516k RR, it is the PCM it is installed in that determines whether it is 1mb or 516k.
    That is was my point.
    I owned a Ford once, ONCE.......

  9. #29
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    Quote Originally Posted by mr.prick View Post
    There is not a 1mb and 516k RR, it is the PCM it is installed in that determines whether it is 1mb or 516k.
    That is was my point.
    True, I was referring to a RR as a RR installed in a 1MB PCM already. Not just the RR module, it doesnt care.

    Quote Originally Posted by N0DIH View Post
    Exactly, usually the question is putting the RR in place of a 28F400 or 28F800 memory, I didn't realize the discussion was the PCM itself. Gotcha.

    I haven't crossed it yet, but I am planning an 0411 swap soon, but was wondering about using the 03-up truck PCM's instead (I have one set for a RR already).

    I suspect that a 512k PCM can be a 1Mb, but the offset of the code that is put in it and the OS is what matters. With a RR you can test it safely without "bricking" a good PCM.
    I got my wires crossed as well on this one, now we're all on the same page.

    A 512kb PCM might be able to be a 1MB with extra memory setup properly, but honestly its probably easier to just buy a 1MB PCM. If you mean a 512kb PCM w/RR installed, probably. I dont know if there are 2 RRs, one 512kb and one 1MB, but if they're all 1MBs setup to accept either a 512kb cal or a 1MB cal, it would be easy to use a 512kb RR as a 1MB one. Hope that makes sense...
    ~Erik~
    2013 Sonic RS Manual - 1.4L I4T E78, tuned, turbo mods, etc.
    2008 TrailBlazer SS 3SS AWD Summit White - LS2 E67/T42, bolt ons, suspension, etc.
    2002 Chevy TrailBlazer LT 4X4 Summit White - 4.2L I6 P10, lifted, wheels, etc.

  10. #30
    Lifetime Member N0DIH's Avatar
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    All the "512k" PCM's I have seen have a 1MB memory in them.

    I have seem most all PCM's with 28F800's, only Black Box PCM's and some Northstars personally I have seen with 28F400's. And those have had 256k programs in them.
    I owned a Ford once, ONCE.......

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