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  1. Replies
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    I am using this and it works very well.

    I am using this and it works very well.
  2. The SPS flash of both of my E-40 PCMs to the 05...

    The SPS flash of both of my E-40 PCMs to the 05 GTO spec was not problematic, both were from 05 Corvettes.

    I did not say that a test of the resistance of the wires was a definitive test. I always...
  3. GTO OS allows for conventional fan control and a...

    GTO OS allows for conventional fan control and a couple of other minor things.

    When I look at the freeze frame data it does indeed look like there is a mismatch; the odd thing is that we are...
  4. Well I tried a TBSS throttle body and it worked...

    Well I tried a TBSS throttle body and it worked great --- for about 25 miles :(


    Back to the drawing board.......
  5. Were you getting any codes other than p2138? ...

    Were you getting any codes other than p2138?

    That is pretty interesting. I might have to give a TBSS throttle body a try.
  6. e40 random and very intermittent P2138 and reduced power

    I have a LS2 in a swap application with a non-GM manual transmission.

    I am using an 2005 e40 PCM, I actually have 2, and both have been SPS flashed as 05 GTO. I have a gold blade LS3 throttle...
  7. Here is another update for future searchers. ...

    Here is another update for future searchers.

    Before I tore everything apart I decided to test the C1 Pin 45 output with the GTO SPS flash. Even though several wires needed to be relocated they...
  8. I'll take your word for it on the changes being...

    I'll take your word for it on the changes being Corvette specific.

    Pointing out how cheap e38s are is just mean :cheers:
  9. I have checked the harness side several times. ...

    I have checked the harness side several times.

    I already did the SPS reflash to a GTO and am building a spreadsheet to compare the PCM pins. At first glance there are only a handful of...
  10. It's too bad they don't :hi: Using an 05 GTO...

    It's too bad they don't :hi:

    Using an 05 GTO PCM seems like the easiest way to sort this out.

    Thank you.
  11. So when the PCM doesn't get a CAN bus signal from...

    So when the PCM doesn't get a CAN bus signal from the BCM it defaults to keeping the fuel pump on all of the time?

    Interesting.
  12. No short between C1 45 and C1 18, 19 &20. The...

    No short between C1 45 and C1 18, 19 &20.

    The starter is independent of the GM PCM: I could use C1 51 to supply the starter relay coil and C1 13 to ground the relay but I have no way to tell the...
  13. More E40 Mysteries - Fuel Pump Relay Control C1 Pin 45 Always Hot

    2005 Corvette E40 SPS flashed for a manual transmission in another non-GM chassis - no BCM and no CAN Bus contact with the PCM.

    The engine starts and runs but I have the fuel pump wired to always...
  14. It is pretty funny and a lot of work. I...

    It is pretty funny and a lot of work.

    I understand that moving to an E38 would mean moving to a 58x reluctor and 4x cam gear and re-doing the PCM connecetors.
  15. Understood; didn't mean to suggest that I...

    Understood; didn't mean to suggest that I received any bad advice.

    Now the fuel pump relay C1 pin 45 is always hot +12v whenever the ignition is on - another mystery.

    I'm pretty close to...
  16. For future searchers here is what should be the...

    For future searchers here is what should be the final follow up.

    The problem was a BAD PCM

    I replaced the PCM and the system is working perfectly with the C7 pedal wired as described above.
    ...
  17. Another follow up - 1st this car is definitely...

    Another follow up - 1st this car is definitely possessed.

    The throttle system worked perfectly yesterday. I disconnected the battery, went out to the car this morning and it is back to its old...
  18. As a follow up - the problem was simply the base...

    As a follow up - the problem was simply the base service level tune :doh: :o . Once I service level flashed a manual transmission tune into the E40 PCM everything worked as it should, including the...
  19. I should be able to test a stock APP later today;...

    I should be able to test a stock APP later today; hopefully that will work but I doubt it.

    If I am following this correctly if I had a 2005 Corvette Auto in front of me and unplugged the TCU it...
  20. I have written the original stock tune into it...

    I have written the original stock tune into it (Which was an auto) and it makes no difference.
  21. I do not have the transmission controller and all...

    I do not have the transmission controller and all transmission wiring has been removed.

    All sensors are reporting voltages correctly except for APP1, including APP2.
  22. The ECU is reporting 0.00v when scanning the APP1...

    The ECU is reporting 0.00v when scanning the APP1 PID even though the wire feeding pin C1 22 has between 1-2.5V travelling through it - that is the issue that I am trying to solve. APP2 is...
  23. E40 APP1 Mystery - 0V reported by ECU; 1-2.5V being generated by APP1

    Settle in, this is a weird one.

    I've don a lot of swaps over the years and this one is a real head scratcher/beard stroker :banghead:. Lucky me. You should know this car has been cursed from the...
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    Can someone please post a screens hot of the...

    Can someone please post a screens hot of the logger with the "diagnostics and info" button pushed (its the one that looks like an engine?

    I am looking to see if you can activate various controls...
  25. Replies
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    Does HP Tuners give access to DTCs? I am...

    Does HP Tuners give access to DTCs? I am thinking of using this essentially as a stand alone with a manual transmission.
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